(optional) Design a solar collector: Following the steps to decide the size of a solar collector. Step1: the customer wants to heat 500 liters of water from 15 to 80 C. How much heat is required? Step2: the local daily solar insolation rate is 1.13*107 J/m2. How much heat the solar can provide per m2? Step3: if 33% of solar energy can be used to heat water (q) with a solar collector, how much heat can be used to warm up cold water? Step4: what collector surface area is A (m2) required?

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Energy is generated uniformly in a 20cm thick wall the steady state temperature distribution of the wall is indicated on the table below; z (cm) T(C) 0 2 4 6 8 10 12 14 16 18 20 150 177 205 230 250 272 292 310 330 345 360 If thermal conductivity of the wall is 15 W/m.K and the indicated temperatures are in °C, determine the average rate of heat generation in unit volume.

A 4mx5m wall consists of 3 glass windows of 1.5mx1.0m dimensions. The wall has thickness of 0.125 m and a thermal conductivity of 0.5 W/mK, while the glass windows are 6 mm thick with a thermal conductivity of 1.24 W/mK. The values of Internal and external surface conductance for the wall (including glass) are 8.3 W/m K and 34.4 W/m²K, respectively. The internal and external temperatures are 21°C and -30°C, respectively. Calculate the total heat transfer rate through the wall. What percentage of this heat transfer is through the windows?

An air pipe carries cool air at an inlet bulk temperature of 15C and a velocity of 12 m/s. The pipe is made of carbon steel of 0.25 m diameter, it is not insulated, and it( the pipe) will be maintained at temperature of 120C in order to raise the flowing air temperature to 45C. Calculate the Reynolds number, the heat transfer coefficient in W/(m^2K) and the lenght of this pipe in meters. Use Table A.4 to read the air properties.

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Please show all steps thank you, This class is Heat Transfer.