Hi,
Suppose there is loss of 50 degree C against the target skin temperature of furnace. So, how to calculate estimated energy saving by reducing this 50 degree C to 0 degree C (Heat loss= how much energy?)
Please share detailed calculation sheet if possible.
Thanks.
Dear Anurag
Heat loss from solid wall of furnace to the ambient air can be calculated using Newton's law:
Q=hA(T1-T2)
where T1 and T2 are the wall and air temperature respectively. h is convection heat transfer coefficient and is a function of fluid properties, flow regime and ....
in the case of natural convection, h depends highly on the temperature difference, so the ambient temperature is important in such calculations. you can use the following reference to define h.
1- Holman, Jack Philip. Heat Transfer-Si Units-Sie. Tata McGraw-Hill Education, 2002.
2- Bergman, Theodore L., et al. Introduction to heat transfer. John Wiley & Sons, 2011.
Dear Anurag
Heat loss from solid wall of furnace to the ambient air can be calculated using Newton's law:
Q=hA(T1-T2)
where T1 and T2 are the wall and air temperature respectively. h is convection heat transfer coefficient and is a function of fluid properties, flow regime and ....
in the case of natural convection, h depends highly on the temperature difference, so the ambient temperature is important in such calculations. you can use the following reference to define h.
1- Holman, Jack Philip. Heat Transfer-Si Units-Sie. Tata McGraw-Hill Education, 2002.
2- Bergman, Theodore L., et al. Introduction to heat transfer. John Wiley & Sons, 2011.
Hi
Using newtins law of convection... From that yiu can find the energy by using sp heat of system
Calculating Annual Heat Loss
Calculate heat loss for each day.
Add the heat loss for all days in a year that needed heating.
Leave the The R-value of the wall and the area of the wall the same – they will not change.
Determine the difference between inside and outside temperature, since it will change for each day.
The heat loss from furnace calculated by using conduction and convection equation. The heat loss from the furnace will dipend on furnace bricks and materials use for the furnace.
Q = UA(T1-T2)
U= overall heat transfer coefficient
1/U=1/h+L/K+1/ho
Dear Anurag Pandey
Please take a look at these sites
Best regards
https://cyberleninka.org/article/n/612163.pdf
https://www.open.edu/openlearn/nature-environment/the-environment/energy-buildings/content-section-2.4.1
https://www.gov.uk/government/publications/solid-wall-heat-losses-and-the-potential-for-energy-saving
https://www.sunkoolac.com/blogs/reduce-home-heat-loss-see-benefits-comfort-efficiency-savings
Loss of the heat in (BTUs/h , kWh)can be calculated using physics principle of newtons laws of convection for house/buildings, windows, and wall etc..Total Heat loss can be calculated using individual formulla for a hours, a day, a season and a year.
Other ways to calculate readymade, Heat loss one can use heat loss calculater by feeding all details of particular of the house in one window and Temperature details on the other window and constructiono of materials details in third window. The annual heat loss from house can be calculated.
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