WATER HEATER SIZING GUIDE FOR ENGINEERS
To do so, we divide the BTU/hour by a constant of 33,475. This constant represents water being converted to steam, which is 34.5 pounds of water multiplied by 970.3 BTU/lb, or latent energy. For this calculation, you will enter the BTU/hr of your operation along with the efficiency of your boiler.
Select water heating equipment for a 200-room convention-type motel. The flow rate of each shower head will be 2 GPM. The laundry will have three 50-lb washers. There will be no food service. The owners request one central system. First, calculate the rooms load: RD = TU x FR x AF x 0.8 RD = 200 x 2 x 5 x 0.8 RD = 1600 SR = RD x .33 SR = 528
The key to proper water heating system design is to correctly identify the quantity, temperature and time characteristics of the hot water requirement. The goal is to reduce hot water wait time to 10 seconds or less, which is considered acceptable for public lavatories. A wait time of 11 to 30 seconds is considered borderline and a wait time of 30
Dec 19, 2017 · Boilers heat water, and provide either hot water or steam for heating. B oilers that use radiators or in-floor pipes to distribute heat are the most common type of heating system. Before designing a heating system you need to know the heating capacity and after that calculating boiler size .
WOAH! Is that hot water boiler sized properly? | US Boiler
Water Circulation - Boiler Capacity in BHP - Temperature drop in degrees Fahrenheit. 1 gal (US)/min = 6.30888x10-5 m3/s = 0.0227 m3/h = 0.06309 dm3(liter)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min. 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h.
H-C 180-40 140 is hot water % of cold water in mixture is: 1 ∅ 3 ∅ (Balanced Circuits) Watts = Amps .577 X Watts = Amps H-M = 180-140 = 40 = 28.5% of mixture Volts Volts H-C 180- 40 140 is cold water. Volts X Amps = Watts Volts X Amps X 1.73 = Watts PERCENTAGE OF 180°F PREHEATED WATER TO MIXING VALVE FOR SELECTED MIXED
Hot Water Boiler Circulation Rates - Engineering ToolBox