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Question
Drainback systems can use either unpressurized or pressurized thermal storage tanks.
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| Indicate the answer choice that best completes the statement or answers the question. |
Answer
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Related questions
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the installation cost divided by the annual operating cost savings b.
the number of years required for the investment to repay the higher initial cost using the savings it generates, relative to that of a conventional system c.
the number of years required for the annual operating cost savings to equal the installation cost d.
the installation cost divided by the difference between the installation cost of the system and a conventional system
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total interest income earned multiplied by percentage of income retained by the owner b.
total interest income earned multiplied by income tax percentage c.
installation cost divided by annual operating cost savings d.
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What do straight lines on a simple payback curve imply? a.
The inflation of fuel cost was included. b.
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The fuel cost was not considered in the calculation. d.
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minimum fluid temperature b.
serial or parallel piping layout c.
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about equal to the average low summer air temperature c.
about equal to the average high winter air temperature d.
about 65 degrees F in most areas of North America
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the ratio of heating load to total heating and cooling load b.
the percentage of total load it can meet c.
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Maximum head loss is generally independent of flow rate. a.
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Q:
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percent of total heat load that may be supplied by solar energy c.
requirement for grounding and pressure-relief valves d.
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What would result from increasing the pressure rating of the relief valve? a.
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dimensions of exposed glazing c.
dimensions of the absorber plate and headers d.
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