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Concept Selection for the 2005 Solar Decathlon Heat Pump System

Concept Selection for the 2005 Solar Decathlon Heat Pump System. Heat Pump Group (HPG) - Robert Krickus, William Lancaster, Carrie O’Planick, Kris Powers, and Chris van Swol. Mission Statement. Overview of Concept Selection Process. Review and Ranking of Needs. Preliminary Specs.

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Concept Selection for the 2005 Solar Decathlon Heat Pump System

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  1. Concept Selection for the 2005 Solar Decathlon Heat Pump System Heat Pump Group (HPG) - Robert Krickus, William Lancaster, Carrie O’Planick, Kris Powers, and Chris van Swol

  2. Mission Statement

  3. Overview of Concept Selection Process Review and Ranking of Needs Preliminary Specs Alternative Designs and Concept Selection

  4. Review of Surveyed Customer Needs Overall Size of Unit Accessibility of Unit Energy Cost to run Unit Ease of Use Ease of Maintenance

  5. Ranking of Needs with a Concept Metrics

  6. Initial Concepts The Concepts where broken down into three different types. -Heating -Cooling -Configuration

  7. Heating Methods Forced Air Through Ducts Stable and standard Design Takes up wall space Uneven Heating Passive Solar on the House Simple ArchitecturalVariable Heating Radiant Flooring Uses Floor Space Even Heating Simple Heat Pump

  8. Cooling Methods Duct Cooling Single Exit Less Space Less Air Flow Multiple Exit More Space Better Cooling Radiant Ceiling Best cooling Problems with Condensation

  9. Configuration One of the most important ways to save space. Folding areas give a reduction of space with good maintenance. Unfortunately they do not Have a long life span. A vertical design saves space but Is hard to maintain.

  10. Horizontal Designs Horizontal Designs are easy to construct and work on. They are also the largest and most unwieldy of the designs.

  11. In order to select a concept, we needed to be able to visualize the system The dimensions of the house will not be defined until after the competition Initially, we used 2-D methods to find the most compact design

  12. Three dimensional models are generally easier to work with Components sketched in CAD were to complex to arrange The current system can be modeled in terms of “chunks” CompressorBlack & White Pumps Blue, Green Heat Exchangers Red, Orange Check Valves Cream Expansion Valves Silver Liquid Line Dryers Black Solenoid Valves Gold Sight Glass White Four-way Valve Brown We modeled the system using color-coded blocks

  13. The current hot water tank and fan coil unit may restrict the heat pump space 18” 22” 43” Hot Water Tank Fan Coil Unit 43” Heat Pump 20” diameter

  14. Our objective for the first design was to meet the geometric specifications To Fan Coil Unit 20” One drawback to the design is the internal piping 20” 24” Based on customer needs, ease of maintenance was rated a 1.4 In the future, we could modify the design with external piping To Tempered Water Tank To Hot Water Tank

  15. A number of geometrical configurations for the system are possible This system, mounted vertically, conserves floor space 14” 36” Other advantages include the external piping and separate switches In the future, more design options will be offered Questions? 8”

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