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1. Patent No. GB9522882.1, (1995). Improvements in or relating to energy apparatus, 8th November 1995, S. B. Riffat, The University of Nottingham, U.K. 2. Patent No. GB9522882.1, (1996). PCT 96/31750, Heat pipe with improved energy transfer, 10th October 1996, S. B. Riffat, The University of Nottingham, U.K. 3. Patent No. GB9507035.5, (1995). Improvements in or relating to energy apparatus. S. B. Riffat, The University of Nottingham, U.K. 4. Otson, R., Fellin, P., (1992). Volatile organics in the indoor environment: sources and occurrence. In Gaseous pollutants: characterisation and cycling (Ed J O Nriagu). New York, Wiley. pp. 335-421. 5. Kenny, J., (1994). A breath of fresh air: Mechanical ventilation with heat recovery. Design for Living: Future World, Electricity Brochure. By the Electricity Association Services Ltd. London, UK, Tanbryn Ltd. p.19. 6. Riffat, S. B., Shankland, N. J., Gillott, M. C., (1998). A Novel Ventilation/ Heat Recovery Heat Pump. Proc. of 19th AIVC Annual Conference, Oslo, Norway, September 1998. 7. Gillott, M., C., (2000). A Novel Mechanical Ventilation Heat Recovery/Heat Pump System. PhD Thesis, University of Nottingham. 8. BS 4434, (1995) Specification for safety and environmental aspects in the design, construction and installation of refrigerating appliances and systems. British Standards Institute, London, UK. 9. BS 848: Part 1:1980. Fans for general purposes. Methods of testing performance. British Standards Institute, London, UK.
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have long been debated and different rationales have produced radically different ventilation standards. 7. The portion of the return air that is discharged to the environment. 11. The use of this type of hvac system presents complex ventilation problems since the airflow rate to each space in the building varies throughout the year. 12. A term also known as “conventional mixing.” If not done well, this has been called “short-circuiting.” 15. The mixed air in an air-handling unit which is conditioned and delivered tothe thermal zone. 16. This type of air mixing occurs when supply air is instantly and evenly distributed throughout a space. 20. The height in a building at which the interior and exterior pressures are equal.
Answer
ACROSS 2. The type of ventilation that involves intentional movement of air into and out of a building using fans and intake and exhaust vents. 6. This function is the relationship between the airflow through an opening in the building envelope and the pressure difference across it. 8. A term that should not be used to describe outside air because outside air may need treatment to be acceptable for use in a building. 9. This pollutant type can be generated from concrete, stone, or soil. 10. This ventilation term is used to describe an air distribution system’s ability to remove internally generated pollutants from a building, zone, or space. 13. The intentional introduction of air from the outside into a building. 14. The part of the return air that is reused. 17. Air brought back to the air handler from the conditioned space. 18. This type of control allows the use of more outside air when the outside air temperatures are such that “free cooling” can be used as the outside airflow rate is modulated to meet the thermal loads.
19. Another ventilation term used for the intentional movement of air into and out of a building using fans and intake and exhaust vents other than the term described in clue 2 Across. 21. The air that moves from one interior space to another, either intentionally or not. 22. This draft coefficient is the sum of the actual top and bottom pressure differences (outside to inside), divided by the total theoretical draft of a building when analyzing stack effects.
DOWN 1. The movement of air within a space in a piston-type or plug-type motion. 2. This pollutant type can be generated from particleboard and plywood. 3. Any portion of the mixed air that intentionally or unintentionally circumvents conditioning. 4. The uncontrolled flow of outdoor air into a building through cracks and other unintentional openings and through the normal use of exterior doors. 5. Outdoor air requirements for accept- ability of this
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