The heat flow rate can be calculated as . h = (4.2 kJ/kg o C) (1000 kg/m 3) (10 liter) (1/1000 m 3 /liter) ((100 o C) - (10 o C)) / ((30 min) (60 s/min)) = 2.1 kJ/s (kW) The 24V DC electric current required for the heating can be calculated as. I = (2.1 kW) (1000 W/kW)/ (24 V) = 87.5 Amps

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Get A Quote1 horsepower (boiler) = 33445.6 Btu (mean)/hr = 140671.6 calorie/min (thermo) = 140469.4 calorie (mean)/min = 140742.3 calorie (20oC)/min 9.8095x1010 erg/sec = 434107 foot-pound-force/min = 13.1548 horsepower (mech) = 13.1495 horsepower (electric) = 13.3372 horsepower (metric) = 13.1487 horsepower (water) = 9809.5 joule/sec = 9.8095 kilowatt. Horsepower (hp) can be converted into lbs of …

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Get A QuoteOnce the load is established, then we can calculate the necessary flow rate. GPM = Heat Load/ 500 ^T. GPM describes the flow rate; the heat load is expressed as BTU/H, which is the heat loss of the building at design conditions. ^T is the temperature difference that occurs from the supply to the return when water is circulated through the radiation.

Get A QuoteBoiler Ratings and Boiler Load . The oldest method of rating boilers, still used to rate small boilers, is by horsepower (hp). One horsepower is defined as the ability to evaporate 34.5 lbs of water into steam at 212 deg. F and above. Large boiler capacity is generally given in lbs of steam evaporated per hour, under specified steam conditions.

Get A QuoteMar 04, 2020 · This HVAC Load Calculator quickly estimates the size of your heating and cooling system in BTU's. The heat load estimate is based on your climate region, total square footage, number of rooms or zones you want, ceiling height, insulation type, number of windows and doors. This HVAC calculator is the closest estimate to the actual Manual J calculation done by HVAC pros.

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