A homeowner would like to add cooling to two offices in their 3,000 SF home with natural gas boiler. What is the best option for a heat pump in this scenario? Replace an existing ducted furnace system with a ducted heat pump Install a heat pump as the primary heating system but keep the existing...
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Explain three benefits of air source heat pumps compared to fossil fuel heating systems.
Which of the following should be assessed before installing a heat pump? Is the electrical panel sized to accommodate the heat pump? Is there space to locate the outdoor unit so it gets proper airflow? Does the difference between the gas and electric utility rates in the area favor heat pump...
Which of the following statements is not true when replacing a ducted furnace with a ducted heat pump? The ductwork should be assessed to ensure it is properly sized for the new equipment Air conditioning will not increase the risk of condensation on the ducts The existing ductwork should be...
Chris is considering replacing his natural gas boiler with a multi-zone ductless heat pump system. The boiler has an efficiency of 70% and the ductless mini-split has an HSPF of 11.5. Chris uses 1,000 therms per year and pays $0.66 per therm and $0.11 per kWh. How much would it cost to run each...
Which of the following statements is a correct statement of the “law of diminishing returns”? A. Every time you increase the thickness of the insulation, heat loss increases by a factor of two. B. As you reduce the insulation level, heat loss decreases at a 1:2 ratio. C. Every time you double your...
Consider Table 1 in the Objective 3.1 (i.e., “Example of the results summary table based on matrix [g] for several lighting products”) for example LCA results. Which product has the lowest hazardous waste to landfill? What aspect of the lighting products might be contributing to the landfill waste...
What is the difference between LCCA and LCA? Why is the distinction important for building science?
What is the main function of linear interpolation? Creating a linear relationship between two points Determining an unknown value on an existing line between two known points Extending a linear relationship beyond known data to predict the line’s behavior Making a graph for a report A heat pump has...
What is low-E coating and how does it improve window performance?
Match the terms with the correct definition. Key Term Definition a. P&T relief valve 1. A fitting or device that provides a liquid seal to prevent the emission of sewer gases without materially affecting the flow of sewage or wastewater through it. b. potable water 2. Consists of the water service...
Which of the following are ways to minimize and/or prevent indoor air quality problems? Select all that apply: Balance the ventilation system Control humidity in the home Install exhaust fans Seal the building envelope so no moisture can flow through it at all.
Explain how energy model code adoption by legislation, regulation, and a local government are different.
What is a model code? What are five examples of model codes?
Which of the following statements is not true about how a model energy code is developed and adopted? A . The period between adoption and effective date typically varies from 2 months to 2 years. B. The IECC is revised on an annual cycle. C. Full publication of the IECC occurs every third year. D...
Which if the following is not a model code: A. International Fire Code B. International Plumbing Code C . ASHRAE standard 90.2 D. International Electrical Code
For a residential building in Portland, OR (IECC climate zone 4 marine), use a table to compare five measures between the model code and the corresponding ENERGY STAR requirements.
Identify the building codes that relate to plumbing requirements in the U.S.
What is the National Fenestration Rating Council?
List 3 window performance measures that appear on an NFRC label?