A homeowner wants to reduce their monthly heating bill and carbon footprint and is considering replacing a 20cm x 40cm x .50cm single pane window with a double pane to help in this endeavor. The double pane glass window is advertised to reduce thermal energy loss by 67%. The thermal conductivity of glass is .84 W/(m*K). Find the heat lost every minute by the single paned window if the temperature difference between inside and outside of the house is 14C.

An industrial wall is constructed of 20 cm thick fireclay of thermal conductivity 1W/m 0C. This is covered on the outer surface with a 3 cm layer of insulating material of thermal conductivity 0.075 W/m0C. The innermost surface is at 940 0C and the outermost surface is at 40 0C . The steady state of heat transfer is occurring through the wall. So what is the rate of heat transfer rate that is occurring through the wall? What is the temp of the interface of these walls?

A solar collector and storage tank, shown in Figure (a) below, is to be optimized to achieve minimum first cost. During the day the temperature of water in the storage vessel is elevated from 25 °C (the minimum useful temperature) to tmax, as shown in Figure (b). The collector receives 260 W/m² of solar energy, but there is heat loss from the collector to ambient air by convection. The convection coefficient is 2 W/(m²*K), and the average temperature difference during the 10-hour day is (25 + tmax)/2 minus the ambient temperature of 10 °C. The energy above the minimum useful temperature of 25 °C that is to be stored in the vessel during the day is 200,000 kJ. The density of water is 1000 kg/m³, and its specific heat is 4.19 kJ/(kg*K). The cost of the solar collector in dollars is 20A, where A is the area in square meters, and the cost of the storage vessel in dollars is 101.5C, where V is the volume in cubic meters. Storage tank Collector (a) Temperature, C tmax 25°C, lowest useful…

A house has a 120 square meter of net exterior wall area (after subtracting for windows, doors, and so on). The outside air temperature is 38°C and the inside temperature is 20°C. Compute the rate of heat loss through an insulated wall (U 0.05 W/°C.m^2).

Solve it quickly please

Please try to solve this on a piece of paper so it is easier to understand.

An office space of 15 ft x12 ft x10 ft height. The heat loss through walls is (6949.8 Btuh) if Tb.l.=80 F , To= -10 F , and Uwall=0.143 Btu/hr.ft2.F ? True or false

A cold-storage room is constructed of an inner layer of 11 mm of pine with thermal conductivity of 0.15 W/m K, and an outer layer of 75 mm of concrete with thermal conductivity of 0.75 W/m K. The  wall surface temperature is 253 K inside the cold room and 299 K at the outside surface of the concrete. Calculate the heat loss in W per 1 m2. Please keep one decimal and take positive value for the final answer.

A cold-storage room is constructed of an inner layer of 14 mm of pine with thermal conductivity of 0.15 W/m K, and an outer layer of 75 mm of concrete with thermal conductivity of 0.75 W/m K. The wall surface temperature is 258 K inside the cold room and 298 K at the outside surface of the concrete. Calculate the heat loss in W per 1 m2. Please keep one decimal and take positive value for the final answer.

What is the heat loss through the windows of a passenger train left outside a station in winter, assuming that the temperature inside the train is 20°C, outside the train, -20°C, total heat transfer area 40 m2. The thickness of glass wall may be taken as 0.5 cm. The thermal conductivity of glass is 0.88 W/(m.K).