How much heat is required to raise the temperature?

How much heat is required to raise the temperature?

To calculate the energy required to raise the temperature of any given substance, here’s what you require:

1. The mass of the material, m.
2. The temperature change that occurs, ΔT.
3. The specific heat capacity of the material, c (which you can look up).
4. Here is a source of values of c for different substances:
5. Q=m×c×ΔT.

How many kWh does it take to heat water?

When you buy an immersion heater it is given a kW rating, for example 3kW or 6kW. If you take the example of required temperature rise above and you have a 3kW immersion heater it would take about 2hrs 30 to heat the water (3kW each hour, so in two and a half hours that would give 7.5kW).

How do you calculate the flow rate of a heat load?

Once the load is established, then we can calculate the necessary flow rate.

1. GPM = Heat Load/ 500 ^T.
2. GPM = BTU/hr.
3. An example.
4. 8.04 x 60 x 1.003 x 20 = 9677 BTUH.
5. 1.105 x 9677 = 10,693 BTUH.
6. Choosing the right circulator.

Does increasing flow rate increases heat transfer?

In other words, the rate of heat transfer is directly proportional to mass flow rate. If you increase the flow rate, you will then increase the rate of heat transfer.

Does turbulent flow increase heat transfer?

The study of heat transfer can be done either in laminar flow or in turbulent flow. Under turbulent flow conditions, the increase in heat transfer rate is more significant than that under laminar flow conditions. This is due to the increase in the Reynolds number of the flowing fluid in turbulent flow.

Which heat exchanger is most efficient?

Plate exchanger is the most efficient due to turbulent flow on both sides. High heat-transfer coefficient and high turbulence due to even flow distribution are important. However, a plate heat exchanger regenerator is restricted to low viscosities. With high viscosities, a special tubular may be required.