## water heat dissipation calculator

Right now I have 1195.2oz (33,883.35g all my calculations are weight, never volume) of water sitting in a 20 gallon stainless steel steam jacketed kettle. What is Turbulence Energy Dissipation Rate? Only input whole numbers, do not use a comma or point. Appreciate the calculators but i was wondering if you could tell me the exact equations used for the “Water Heating Energy Calculator” or give some sort of excel sheet to double check it. It would be really cool to see a calculator that takes this new technology into account. The calculators cannot handle points or commans, only whole numbers. How can I calculate heat dissipation so I can do my job more efficiently? Heat Calculations; Heat Dissipation Capacity of Steel Reservoirs. 1758120 kilojoule/hour = 488.36666667 kilowatt hour This way a circulation develops in the water container given the shape of the water container permits it. it takes the same amount of energy to heat water from 48 degrees to 52 degrees as it takes to heat water from 58 degrees to 62. Heat Sink Temperature Calculator. And for testing/sampling the cool-down, measure a larger drop in temperature, such as 10f, else the result will be unreliable (reading 1f or 2f changes off a small thermometer may be very inaccurate). This curve is a guide to help estimate heat transport capacity for ACT’s copper-water heat pipes using common wick structures.. Download ASHRAE Heat Load Calculation Excel Sheet XLS - 10/10/2018 10:06:00 PM Download residential heating and cooling load calculation excel sheet according to - 2001 ASHRAE Fundamentals Handbook. If the board has sufficient space, it is always beneficial to increase the width of a heatsink rather than the Therefore, as the flue gas is heating the water tank, the coils are taking up the heat. Pump/Motor Heat Dissipation Zac H (Mechanical) (OP) 20 Sep 18 02:19 I have three raw water pumps each driven by 620kW TEWAC induction motors in a pump room that I am trying to determine the heat load for. SCE Thermal Calculator Total Heat Load Necessary Cooling Capacity Necessary Heating Requirements 1. You can determine the power dissipation of a device by observing the current direction and mag-nitude and voltage magnitude and polarity at its terminals. values have been obtained from previous work on the verification of the numerical solutions provided by the heat exchanger model [8]. To determine BTU lost can I use the “Water Heating Energy Calculator” only backwards? I am wondering though, doesn’t heat capacity increase with temperature, potentially throwing off the calculation? In our experience, it generally estimates the overall heat sink volume within +/- 15% of a final design. Equation for Water Cooling Temperature Rise. This calculator is great. The calculator below can be used to determine the temperature delta or rise for a given cooling water application (heat load or power dissipated and cooling water flow rate) using the first formula above. Right now I have 1195.2oz (33,883.35g all my calculations are weight, never volume) of water sitting in a 20 gallon stainless steel steam jacketed kettle. On the left below is a screen solar air heater where the input air moves between the absorber and the glazing before being heated as it passes through the absorber and reenters the house. Calculator Use Convert among units of power and heat flow. For that reason, these values are the minimum and some margin should be added to them. Heat will only be transferred provided there is a difference in temperature between the surface and the ambient air. person_outlineTimurschedule 2017-07-09 04:45:21. Locate on the graph the appropriate input power on the horizontal axis and draw a line vertically until it intersects the temperature rise curve. How do I calculate btu size for heating a swimming pool? When a power W is applied to the thermistor at an ambient temperature Ta and the temperature of the thermistor finally reaches a temperature T, the following equation is established. Hi John, In general heat loss through insulated walls can be almost neglected. By knowing the density of water, one can determine the mass flow rate based on the volumetric flow rate and then solve for the temperature rise. transformers, relays, semiconductors, bus bars, etc.) Definitely the output power must less than input. Heat Heat Sink Temperature Calculator Power components have a maximum junction temperature, which must not be exceeded to prevent damage to the device. If you can test how fast the water cools down in your tub, then you can calculate how much heating power is required to prevent that from happening. The thermal dissipation constant δ indicates the amount of power required for a thermistor to heat itself up by 1℃ when it is energized in still air (mW/℃).When a power W is applied to the thermistor at an ambient temperature Ta and the temperature of the thermistor finally reaches a temperature T, the following equation is established. So, the energy required to raise the temperature of 7000 kg of water from 20C to 80C is: I have saved the page to my home screen. When considering heat dissipation in control panels it’s important to note what electrical equipment manufacturers specify as a maximum allowable operating temperature for their components. Heat Up Applications - Energy Required and Heat Transfer Rates - Energy required to heat up a substance Hot Water Boiler Circulation Rates - Boiler power and water flow - Imperial and SI-units Hot Water Heating System - Flow Temperature vs. Outside Temperature - Seasonal effects on hot-water heating systems flow temperatures Hi “New pool, cold water !” There is 50mm thick rock-wool insulation and 0.4mm thick stainless steel 304 external cladding. This calculator is approximate because it doesn’t account for the many factors that impact heat loss in the swimming pool. This calculator can be used to determine the total power draw and heat dissipation (BTU/h) of Biamp products. Enclosure Heat dissipation value according to the table below (when ΔT is 20K): 310W 310 / 20K = 15,5W 15,5 x 10K = 155 W If the ΔT = 10K, the natural heat dissipation of a free standing MCS18044R5 is 155W All data is calculated by using the formulas presented in this paper. A reference link has been placed below the calculator for further reading. heat dissipated in the enclosure (in watts) by the enclosure surface area (in square feet). This calculator tells how much energy will be consumed to heat the water from the start to end temperature. I am tasked to maintain a 110L aquarium at 22-24C outdoors in Texas. I’m trying to figure out what would it take to heat my pool using a heating pipe after the filtration pump. But when the state of water changes from solid to fluid (e.g. A water cooling calculator to determine the required water (or other liquid) flow and temperature rise for a given heat load/thermal dissipation is shown. For 4 hours 488/4 = 122kw Heat dissipation is closely related to energy dissipation. Let’s make a calculation example for a tub with 250 us gallons that cools down from 105f to 103f in 2 hours. It has been heated to 201F and I need to emulsify it with oils at 120F or lower. To make Thanks!!! W: Units of Length: Temperature Unit: 6. If the dissipation factor (tan δ) is very small – typically less than 10%, then the dissipation factor and the power factor differ in a negligible amount and can be assumed to have the same value. How can I calculate heat dissipation so I can do my job more efficiently? I’m curious, though. Climate. This is the best set of calculators on the internet . I’ve been looking for a simple way to ballpark the size of a solar thermal hot water system – and this makes it dead simple! Home / Resources / Heat Sink Thermal Resistance Calculator Heat Sink Thermal Resistance Calculator This tool is designed to calculate the heat dissipation and the heatsink thermal resistance required given four parameters: Maximum ambient temperature, Maximum case temperature, Power output of your RF amplifier. Nice calculator buttt…… you’ve got the abbreviations for the metric units incorrect. heat dissipated in the enclosure (in watts) by the enclosure surface area (in square feet). Pt is the power used to heat the water, in kWh. I have done the calculations in the calculator above for heating 33’000 US gallons from 68F to 90F in 5h (300min) and got a result of approximately 1’200’000 btuh. It complains when volume is 0.25 US gallon, saying volume must be greater than zero. Enter the enclosure dimensions — — … The thermal dissipation constant δ indicates the amount of power required for a thermistor to heat itself up by 1 when it is energized in still air (mW/ ). is this calculation valid only when submerging the heating device in the water, or also when the water is circulating through a heating pipe using a pump? ... Copper/methanol is used if the heat pipe needs to operate below the freezing point of water, and aluminum/ammonia heat pipes are used for electronics cooling in space. They are saying the modern heat pumps can give you 3.8 watts worth of hot water (or something close to that) for each watt that the heat pump uses. Useful terms & Conversions: 1 BTU/hr = 0.293 watts 1 BTU/hr – 0.000393 horsepower 1 Watt = 3 Although the heat dissipation calculation of a control panel is a simple one, the true impact of external influences can be more difficult to determine. The advantage of heat pipes is their great efficiency in transferring heat. Various devices are designed in stream beds to reduce the kinetic energy of flowing waters to reduce their erosive potential on banks and river bottoms . watts) to water. The heat dissipation (=self-warming) of all installed electrical load (e.g. The tank is a stainless steel 500 liters capacity Also, you should have some extra power available, just to be sure. This was super helpful in calculating the power needed to produce my hot water via solar photovoltaics. The specific heat capacities show water to be the best liquid for holding heat. (IT) = International Table (th) = Thermochemical How to Convert Units of Power and Heat Flow Conversions are performed by using a conversion factor. the process generates heat. has to be taken into account if components are operated continuously. One BTU is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. The interesting thing when looking at these, especially in the solar heater case, is the difference the two temparatures make. , As another calculator for us math dummies could be total kw x cost of electrical supply. Problems with limit calculations: It complains if the end temp is 212°F or even 211°F, saying it must be less than boiling. This quantity can be used to calculate the dynamic heat dissipation capability of a device, in an analogous way to the electrical case. In most cases this is considered a loss. Thank you! This calculator is approximate because it doesn’t account for the many factors that impact heat loss in the swimming pool. I just want to maintain the temperature. As for efficiency, an electrical water heater can convert electricity with almost 100% efficiency to heat that can be transferred to the water. Heat Dissipation Now that we’ve introduced the materials, let’s take a closer look at the structures used to dissipate heat within a smartphone. increase in the length of the heatsink by a factor of two, three, or four only increases the heat dissipation capability by a factor of 1.4, 1.7, or 2. Thank you. That’s just an example, I have no idea how fast a tub cools down. This comes under thermal. Heat loss calculator To use the heat loss calculator and to find the power of the heater you need to give the dimensions of your room, specify on which floor it is and what type of insulation the walls have. This can occur in many forms, such as kinetic energy loss caused by the forces of friction. or = 488 .36 KW The overall heat loss from an open water tank can be expressed as: Q = Qevaporation fluid + Qradiation fluid + Qtransmission through walls (1) The heat loss due to evaporation of water from a surface of an open tank is totally dominant at higher water temperatures. The heat sink size calculator is based on a well-established equation for estimating heat sink volume during the early stages of heat sink design. I would assume some of the variables would include: -Volume of the radiator (240 x 199 x 45mm)=2149200mm^3 -Specific heat of water (4.187 kJ/kgK) -Specific heat … Enter the thermal conductivity of your material (W/m•K) OR select a value from our material database. As your thermal utility partner, Armstrong satisfies your industry's most unique requirements. The following calculator and examples show how to compute the amount of heat transfer/loss. Watts (W) = The thermal (heat) load in the enclosure is measured in watts. It's safer to be pessimistic. The calculators assume 100% efficiency and no loss of energy during the heating process. where: heat_transferred is the amount of heat transferred, either lost or gained, through the material separating both sides (BTU / hour) Figure 2.9.1 provides some typical overall heat transfer coefficients for heat transfer from bare steel flat surfaces to ambient air. Thanks! What formula did you use to calculate the water heating power? The exact time needed to change the pool temperature will vary based on evaporation rate, convection losses, thermal radiation losses and conduction losses (explained more below). The answer was 4 hours. The watts of dissipation depends on the airflow, the ambient temperature, the fluid temperature, the humidity percentage, the fin thickness, the the fin density, the area of the frame, the material of the rad, the paint thermal conductivity, the surface roughness of the material, the air turbulence, and probably like 5 more things I'm forgetting. Practically, it is also the best for transferring it. Are there any equasions out there which can calculate the heat dissipation of a water-cooled radiator with a fan on it? The dissipation of the kinetic energy of turbulence(the energy associated with turbulent eddies in a fluid flow) is the rate at which the turbulence energy is absorbed by breaking the eddies down into smaller and smaller eddies until it is ultimately converted into heat by viscous forces. I just recently learned about hybrid heat pump water heaters for the home that have much higher heating efficiency than standard electric. This calulator tells you how much minimum heating power is required to heat the water within a specified amount of time. It will also determine the mass flow rate based on those parameters. Water cooling is often used in order to help dissipate or at least transfer large amounts of dissipated power (heat) which can be typical of many power electronics and repetitive pulsed power applications. This is great. If you are unsure which insulation type to choose, go for the worse insulation. ), you orient the current reference arrow at the component so that it points towards the positive terminal. The insulation of where the heating device sits and whether any heat can escape into something other than the water (like a wall, concrete etc.) Send consulting inquiries, comments, and suggestions to richard.ness@nessengr.com, Pulse Forming Network Equations and Calculator, Splitter / Adder Equations and Calculator. Thx 4 a2a. For rocket science one might want to calcualte it more accurately. Is that realistic? M = 7 meter cube = 7000 Ltrs or 7000 Kg So they may complain when you input commas or points. But I have an idea. Input the cross-sectional area (m 2) 98°C to 102°C) this does not hold true any more. When using a simple coil submerged in water, then it will start to heat the water just around it. Definitely the output power must less than input. Locate on the graph the appropriate input power on the horizontal axis and draw a line vertically until it intersects the temperature rise curve. Heat Transfer Calculator To approximate the results of a heat transfer system; enter the fluid data and enter 5 of the 6 available inputs under Flow Rates and Temperatures. Heat can move, transfer, through material by conduction. Choose the internal temperature you wish to have, and choose the temperature difference between it and the maximum external temperature expected. This is the typical heat capacity of water. For practical purposes, it should be precise enough. 1 meter cube = 1000 Ltrs The calculators use the specific heat capacity of water of 4186 J/kg/°C (Joules per kilogram per degree Celsius). Locate on the graph the appropriate input power on the horizontal axis and draw a line vertically until it intersects the Using the “Water Heating Power Calculator” above (250 us gallons, start temperature 103f, end temperature 105f, 120min) tells us that a heating power of 611 watts is required. This comes under thermal. I am looking for how much energy is need to maintain water temperature. The calculators support Celcius/Centigrade, Fahrenheit, Watts (w), Kilowatts (Kw), Btuh, Joule, British termal unit (Btu), liter, gallon, kg, lb, cubic inch, cubic foot etc. PDF | On Jan 1, 2016, Toure Ismael and others published Radiator Heat Dissipation Performance | Find, read and cite all the research you need on … It very much depends on the surrounding temperature, the heat conductivity of your hot tub material, and the shape of the tub. Since water gets lighter when heated it will start to ascend around the coil and cold water will flow to the coil from below. Total heat load consists of the heat transfer from outside your panel and from the heat dissipated inside the control unit. This calculator tells you how long it takes to heat water from start to end temperature with a given heating power. I’m looking at a 50,000 btu boiler with a heat exchanger to heat a 33,000 gallon pool to 90 degrees f. I’ve run then calculation through the formula above, and it’s coming up with a 600,000 btu boiler to raise the water temp (68f) in 5 hours to 90f, which seems to be a really high number? I entered 688 litres start temperature 29 C end temp 37 C with 1600 watts of power. The calculators on this page compute how long it takes to heat water, how much energy is consumed, and how much heating power is required. Using the “Water Heating Power Calculator” above (250 us gallons, start temperature 103f, end temperature 105f, 120min) tells us that a heating power of 611 watts is required. A water cooling calculator is provided below to perform these quick calculations. Thanks. For a commercial Hot Water Heater with storage tank type, is there a fixed formula to calculate what is the heat dissipation of the heater. I am guessing its q=m*cp*dt but when I do the calcs by hand, i get something off so i would like to know my mistake, How much heat energy in joules is necessary to raise the temperature Of 7000 kg (7 M3) of water from 20 °C to 80 °C? The volume in gallons (5), ambient temperature (46F) and target temperature (161) are variables that will change. The formulas on this page allow one to calculate the temperature rise for a given water cooling application where the power dissipation and flow rate are known. Free heat pipe calculator that gives copper-water heat pipe performance as a function of heat pipe dimensions, elevation, and temperature for Advanced Cooling Technologies standard heat pipe products. Choose measurement units 2. One watt = 3.413 BTU/hr. This specific heat calculator is a tool that determines the heat capacity of a heated or a cooled sample. Figures given; 54kW, 480V/3P/60Hz, 65A. Surface Area (sq ft) Temp Diff (°F) Heat Dissipation; Example: If the oil temperature is 140 degrees fahrenheit, and the air temperature is 75 degrees fahrenheit, how much heat will a reservoir with 20 square feet of surface area dissipate? If the component is powered up, calculate the efficiency. If the component is powered up, calculate the efficiency. The heat capacity Cp of water is 4.186kJ/kg-C Dielectric loss factor or loss factor of a material is an another frequently used term. For 8 hours 488/8 = 61kw. As the hot water begins to cool and the Examples of heat transfer/loss calculations Solar heater glazing. I think of it this way: the power limit of heating coil simply submerged in water is reached when the water starts to boil around the coil while the water in other places is still much colder. Dissipation is the process of converting mechanical energy of downward-flowing water into thermal and acoustical energy. Determine input power in watts per square feet by dividing the heat dissipated in the enclosure (in watts) by the enclosure surface area (in square feet). Last updated on April 16th, 2020. is there a formula to calculate the temperature required for 5 gallons of water that will increase the temperature of a stainless steel 15.5 gallon tank from 46F to 161F. Calculate the kilowatt-hours (kWh) required to heat the water using the following formula: Pt = (4.2 × L × T ) ÷ 3600. As electrical components become increasingly smaller and are more densely packed into electrical control panels, the amount of heat generated inside cabinets continues to increase. The tank is a stainless steel 500 liters capacity. I am assuming calculations take into account the specific heat capacity of water? ΔT = 80-20 = 60 C 488 kwh for 1 hour This calculator can find missing values in the relationship between heat and temperature: heat added or removed, specific heat, mass, initial temperature and final temperature. Power = Energy / time The lost power constitutes this thermal loss during conduction time of the It makes 1 out of 1.6, excellent piece of kit. Great calculator. Time period available to heat the water (minutes), Water Heating Calculator for Time, Energy, and Power. By knowing the Energy E = m•Cp•ΔT = 7000 x 4.186 x 60 = 1758120 kJ For a commercial Hot Water Heater with storage tank type, is there a fixed formula to calculate what is the heat dissipation of the heater. Wouldn’t it be faster in the latter case, because the water flow would exchange heat more efficiently than just by convection? File: Water Heater Storage Tank Heat Loss Calculator.xls. This is for a hot tub, I do not need to increase or decrease the temperature. L is the number of liters of water that is being heated and T is the difference in temperature from what you started with, listed in degrees Celsius. For heat transfer from the outside, calculate the area exposed to the atmosphere except for the top of the control panel. For calculating PoE power budgets, please use the Tesira PoE Power Budget Calculator. The heat sink size calculator is based on a well-established equation for estimating heat sink volume during the early stages of heat sink design. The sensible heat in a heating or cooling process of air (heating or cooling capacity) can be calculated in SI-units ashs = cp ρ q dt (1)wherehs = sensible heat (kW)cp = specific heat of air (1.006 kJ/kg oC)ρ = density of air (1.202 kg/m3)q = air volume flow (m3/s)dt = temperature difference (oC)Or in Imperial units ashs = 1.08 q dt (1b)wherehs = sensible heat (Btu/hr)q = air volume flow (cfm, cubic feet per minute)dt = temperature difference … Power components have a maximum junction temperature, which must not be exceeded to prevent damage to the device. And this is 488.36 Kilo Watts of power (since 1J/s = 1W) Straight to the point. For less than the price of a new heater tank, I now have free hot water. Calculate: Average Watts = (Specified Amperage x 0.707) x Voltage.= VA (Waters LC's are already in VA) Calculate: BTU/Hr = Average Watts x 3.412 or Volt Amps (VA) x 3.412; This gives you the heat output per hour for this piece of instrumentation. Quantity of heat. Devices are encapsulated in packages which have different levels of thermal resistance. A Watt is named after James Watt hence the abbreviation is a capital W. A thousand of something is a “kilo” for example a kilogram. (The required fan air delivery can be read off the “Static Pressure vs. Air Flow” graph Heat dissipation. CFM 3/min.) It In turn the abbreviation, for one thousand, is k. Bringing these two together, a kilowatt is a “kW”, not as you have, “Kw”. Title: Water Heater Storage Tank Heat Loss Calculator. The calculators cannot deal with dots or comma. Generally, evaporation account for 30 to 50% of the total heat loss. This would indicate the ideal configuration is to use copper to transfer heat from the processor, and to use water to absorb and move away the heat. I have done the calculation again manually in an Excel spreadsheet and got the same result. @Anna is more important for efficiency. The currently calculating value will always be highlighted in green. Initially, when the rate of heat transfer is high, the hot water has a temperature of 70 C and the cold water has a temperature of 5 C. The two containers have a 65 C difference in temperature. The heat capacity is largely constant in the temperature range that the calculators work (34-210°F or 1-99°C). C p is the specific heat of water (4.186 J/gm deg C) The calculator below can be used to determine the temperature delta or rise for a given cooling water application (heat load or power dissipated and cooling water flow rate) using the first formula above. Thx 4 a2a. Please remember, that the calculators above assume 100% conversion efficiency. The answer is 6 hours 24 minutes. If i change the power to 1.6kw . that is impossible to calculate with the information given. Note that this calculator includes some PoE-powered Biamp products for the purpose of calculating heat dissipation only. The convection heat transfer coefficient between the fins[1] is given by equation 7, 7 where is the thermal conductivity of air evaluated at . Figures given; 54kW, 480V/3P/60Hz, 65A. It will also … Credit for the initial Javascript code used in the calculator is given to Ray Allen who has a number of similar useful calculators on his website, Pulsed Power Portal. Posted on March 13th, 2016 Heat loss calculator To use the heat loss calculator and to find the power of the heater you need to give the dimensions of your room, specify on which floor it is and what type of insulation the walls have. As for effectiveness, a large enough pipe with a pump can probably in theory transfer more heat per second (meaning power, e.g. I do not think it makes much of a difference in practice. Start temp as final and end temp as start. Over an hour it would be “kWh”. Also, the calculator is only correct in the theoretical case that while the water is being heated, no heat escapes from the water to the environment (air or walls etc.). The ambient room temperature is between 75.4F and 71.7F. For an electrical heater that can be a good assumption, but not for a gas heater. 1 litre of water is 1kg This program will give a performance curve of a traditional copper-water heat pipe with the given input values. Some are obvious, like the power dissipated in the FET ON-resistance,others are more subtle. 250 us gallons at 105f with moderate insulation… would 100 watts DC heater maintain this temperature? It would be more complicated to build calculators that can handle that and I have not done so. Be sure to also factor in the thermal resistance of PCB itself when designing features around your device. From the conversion table that follows, determine the BTU/hr. Hi Larry, the energy that is used to heat water from 40 degrees to 60 is the same amount that is lost when the water cools down from 60 to 40 (only changed sign). The water tubes and the fins pitch with an enlarged view. While a heat It is the way it is taught at school. How much depends on the shape of your pool, the quality of the insulation of the pool, the difference of the desired water temperature to the environment and how long you are willing to wait until it is heated. The lost power constitutes this thermal loss during conduction time of the component. 1 Sources of Power Dissipation in a Motor Driver There are a number of sources of power dissipation inside a motor driver IC. Calculation and analysis of engine cooling parameters such as fluid flow rate, effective cooling surface area, coolant passage tubes and rate of heat dissipation when the density and specific heat at constant pressure vary due to changing temperature. If you have problems with the units, feel free to use our temperature conversion or weight conversion calculators. Great help to calculate water flow and energy consumption! To calculate power dissipation (not generation! A heat sink usually consists of a base with one or more flat surfaces and an array of comb or fin-like protrusions to increase the heat sink's surface area contacting the air, and thus increasing the heat dissipation rate. And as always, double check with some other source and my help is without any guarantee or similar. Water - Specific Heat Online calculator, figures and tables showing specific heat of liquid water at constant volume or constant pressure at temperatures from 0 to 360 C (32-700 F) - SI and Imperial units Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree. A box will be highlighted yellow if it needs input. Heat capacity formula . Areas used to calculate the heat dissipation from the heat sink The heat … Heat Calculator Here is a simple Heat capacity calculator to calculate the heat generated, measured in Joules, using the values of specific heat, mass and change in temperature. The comparative graph below shows the heat dissipation curves for all the tested radiators at the attainable static backpressure of 0.05 in.H2O. The control panel’s properties such as color, material type and whether it is insulated or not must also be considered. We solve your problems and make life easier. Your calculators are a big help in figuring the size of the heat sump. Heat loss from the solid surface of the vessel to the atmosphere. Figure 2. Sweet! This is why the calculators complain in these situations. If you use a 611 watts heater in this example, then it will be about enough to reverse this cool-down from 105f to 103f by heating the water back up from 103f to 105f during the same period (realistically, of course, the water does not cool down, but stays at the same temperature). -2°C to + 2°C) or from fluid to gas (e.g. Water Heater Storage Tank Heat Loss Calculator. Save my name, email, and website in this browser for the next time I comment. Improved calculators that support comma, dot, and efficiency, are available here: time, energy, and power. A reference link has been placed below the calculator for further reading. Devices are encapsulated in packages which have different levels of thermal resistance. It follows that heat loss calculations are less accurate. The heat transfer conduction calculator below is simple to use. Energy dissipation is a measure of energy lost due to other forces. An I missing something here?

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