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Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p= 1 kg/L and c=4.18 kJ/kg. °C. 22°C Water 80°C Pump Problem 04.122.b - On-time for the electric heating system How long would the electric heater run that night if the house incorporated no solar heating? (Round the final answer to three decimal places.) The electric heater would run for h. Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p = 1 kg/L and c = 4.18 kJ/kg- °C. 22°C Water 80°C Pump Problem 04.122.a - On-time for the electric heating system How long did the electric heating system run that night? (Round the final answer to three decimal places.) The electric heating system ran for h that night.

Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p= 1 kg/L and c=4.18 kJ/kg. °C. 22°C Water 80°C Pump Problem 04.122.b - On-time for the electric heating system How long would the electric heater run that night if the house incorporated no solar heating? (Round the final answer to three decimal places.) The electric heater would run for h. Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p = 1 kg/L and c = 4.18 kJ/kg- °C. 22°C Water 80°C Pump Problem 04.122.a - On-time for the electric heating system How long did the electric heating system run that night? (Round the final answer to three decimal places.) The electric heating system ran for h that night.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter11: Heat Transfer By Radiation
Section: Chapter Questions
Problem 11.1DP
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Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p= 1 kg/L and c=4.18 kJ/kg. °C. 22°C Water 80°C Pump Problem 04.122.b - On-time for the electric heating system How long would the electric heater run that night if the house incorporated no solar heating? (Round the final answer to three decimal places.) The electric heater would run for h.
Transcribed Image Text:Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p= 1 kg/L and c=4.18 kJ/kg. °C. 22°C Water 80°C Pump Problem 04.122.b - On-time for the electric heating system How long would the electric heater run that night if the house incorporated no solar heating? (Round the final answer to three decimal places.) The electric heater would run for h.
Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p = 1 kg/L and c = 4.18 kJ/kg- °C. 22°C Water 80°C Pump Problem 04.122.a - On-time for the electric heating system How long did the electric heating system run that night? (Round the final answer to three decimal places.) The electric heating system ran for h that night.
Transcribed Image Text:Required information Problem 04.122 - Energy balance for a passive solar house A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kJ/h is maintained at 22°C at all times during a winter night for 10 h. The house is to be heated by 50 glass containers each containing 20 L of water that is heated to 80°C during the day by absorbing solar energy. A thermostat-controlled 19.00-kW backup electric resistance heater turns on whenever necessary to keep the house at 22°C. The density and specific heat of water at room temperature are p = 1 kg/L and c = 4.18 kJ/kg- °C. 22°C Water 80°C Pump Problem 04.122.a - On-time for the electric heating system How long did the electric heating system run that night? (Round the final answer to three decimal places.) The electric heating system ran for h that night.
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