A house has well-insulated walls 18.0 cm thick (assume conductivity of air) and area 450 m², a roof of wood 5.0 cm thick and area 270 m², and uncovered windows 0.75 cm thick and total area 34 m² ▼ Assuming that heat is lost only by conduction, calculate the rate at which heat must be supplied to this house to maintain its inside temperature at 22 °C if the outside temperature is -15 °C. Express your answer using two significant figures. conduction 1.6x105 W t Submit Part B = ✓ Correct Previous Answers If the house is initially at 10 °C, estimate how much heat must be supplied to raise the temperature to 22 °C within 20 min. Assume that only the air needs to be heated and that its volume is 750 m³. Take the specific heat of air to be 0.24 kcal/kg. C°. Express your answer using two significant figures. = 195] ΑΣΦ | 1 Qadded 40756942 → C Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining ? J
A house has well-insulated walls 18.0 cm thick (assume conductivity of air) and area 450 m², a roof of wood 5.0 cm thick and area 270 m², and uncovered windows 0.75 cm thick and total area 34 m² ▼ Assuming that heat is lost only by conduction, calculate the rate at which heat must be supplied to this house to maintain its inside temperature at 22 °C if the outside temperature is -15 °C. Express your answer using two significant figures. conduction 1.6x105 W t Submit Part B = ✓ Correct Previous Answers If the house is initially at 10 °C, estimate how much heat must be supplied to raise the temperature to 22 °C within 20 min. Assume that only the air needs to be heated and that its volume is 750 m³. Take the specific heat of air to be 0.24 kcal/kg. C°. Express your answer using two significant figures. = 195] ΑΣΦ | 1 Qadded 40756942 → C Submit Previous Answers Request Answer X Incorrect; Try Again; 18 attempts remaining ? J
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.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.64P: The interior wall of a large, commercial walk-in type meat freezer is covered under normal operating...
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