wattsie10
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Please can someone show me how to work out the following questions.
1) A hot water cylinder holds 500 litres. If the primary heat source is 30kW and the supply water inlet to the cylinder is 12°C, how long will it take to heat the whole tank to 60°C?
2) The primary side of a plate heat exchanger rated at 400kW has an inlet temperature of 85°C and the outlet temperature is 40°C. What is the mass flow rate?
3) To achieve a water flow rate of 5kg/s at 20°C from a 210kW source, what would be the temperature of the water as it enters the heat exchanger?
Many thanks
1) A hot water cylinder holds 500 litres. If the primary heat source is 30kW and the supply water inlet to the cylinder is 12°C, how long will it take to heat the whole tank to 60°C?
2) The primary side of a plate heat exchanger rated at 400kW has an inlet temperature of 85°C and the outlet temperature is 40°C. What is the mass flow rate?
3) To achieve a water flow rate of 5kg/s at 20°C from a 210kW source, what would be the temperature of the water as it enters the heat exchanger?
Many thanks
