How does a single-effect water-cooled absorption chiller cool the water for the air-conditioning system?
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How does a single-effect water-cooled absorption chiller cool the water for the air-conditioning system?
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- Building requires to maintain different temperature settings. What are most common cooling system used here in Singapore.?A concrete wall has a thermal resistance of 0.095 K/W. There is a glass window in the concrete wall with a thermal resistance of 0.046 K/W. What is the total thermal resistance for the whole configuration (wall+ window) (K/W)? O A. 0.1410 B. 32.2654 C. 0.6738 OD. 0.0310 OE. None of them.What is the function of freeze-condensation vacuum system?
- How can a gas-fired warm-air furance be used to cool a building?The purpose of heat treatmentare maintained at uniform temperatures of 300°C and 4 cm Tem 5 cm 10cm hem 100°C,respectively. Determine the rate of heat transfer through the wall and draw the thermal circuit. Q2) A double-pipe counter flow heat exchanger is to coo! ethylene glycol (Cp-2560J/kg.°C) flowing at a rate of 3.5 kg/s from 80°C to 40C by water (Cp-4180J/kg.°C) that enters at 20°C and leaves at 55°C. The overall heat transfer coefficient based on the inner surface area of the tube is Celd water 20C Hot glycel 250W/m2.°C. Determine: 15gs (a) The rate of heat transfer. (b) The mass flow rate of water. (c) The heat transfer surface area on the inner side of the tube. Q3) A(10 m) long section of a 0.05m diameter horizontal hot water pipe passes through a large room whose temperature is 22°C. If the temperature of the outer surface of the pipe is 65°C, determine the rate of heat loss from the pipe by natural convection? The properties of air at 43.5°C is k = 0.02688 W/m.°C, u = 1.735 10 m /s, Pr = 0.7245.…
- Type of Heat Treatment.100°? air flows through a round aluminum tube of ID 60mm and OD 80mm at 4 ?? .The tube is covered in 5mm thick fiberglass insulation. The tube is surrounded by RT air flowing at 5?? over the outside of the insulation. What is the heat rate through the wall of the tube? Assume that the air temperature is constant throughout the tube. Note: RT is 25 celsiusCalculate the decrease in heat loss in kilowatt-hours per day when a 1.2 m x 2.1 m uncoated single-pane window is replaced with a double-glazed window with a low-e coating and argon fill (a relatively common configuration for current win- dows). The inside temperature is a constant 20°C, and the outside temperature is a constant -5°C.