What is the power input in kilowatts rounded to the closed 0

What is the power input (in kilowatts, rounded to the closed 0.1 kw) for a heat pump system with a COP of 3.0 that would be needed for this home? Note that 1 kw = 3412 Btu/hr. Types of insulation include all except: Fiberglass Rigid Spray foam Thermal bridging Cellulose Advanced framing includes all the following techniques except: Single header above windows Single studs at window and door openings Single top plate Two-stud corner 16\" stud spacing Metal studs have thermal bridging that typically reduces wall R-values by about: 10% 25% 50% 75% 90% An electrician removed 10% of the insulation in an attic. A cable TV contractor removed another 20% of the original insulation. The originally had an R-value of R-25. A blower door test on the house resulted in 2200 CFM50. How much did the removed insulation reduce the attic R-value by, approximately? 76% 66% 56% 46% 36% The house in Question 1 above has a blower door test result of 2000 CFM. Does it need mechanical ventilation? Explain why.

Solution

1. d) thermal bridging

2.e) 16\" stud spacing (Advanced framing includes 24\" stud spacing)

3. c) 50%(Metals have thermal bridging that reduce R value by 50%)