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Indoor Air caliber Contro
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Extra resources for Indoor air quality control techniques: radon, formaldehyde, combustion products
3. The a carpet). emission r a t e o f formaldehyde from many sources with the varies indoor formaldehyde concentration and t h e r e l a t i o n s h i p bebeen emission rate and indoor concentration varies between sources. 4. The emission r a t e o f formaldehyde depends on the temperature o f the source and t h e humidity o f the surrounding a i r . 5. It is possible formaldehyde i s removed by indoor surfaces, reaction with although there i s i n s u f f i c i e n t information t o determine i f r e a c t i o n a c t u a l l y occurs.
Model systems are i n s t a l l e d and operated. 99 t o 4,38 therms). A p r e f e r r e d method t o determine energy savings when MVHX are used i s t o a c t u a l l y measure e n e r w consumed f o r heating i n houses w i t h and w i t h o u t these systems. energy savings by t h i s method, houses are monitored. 15 systems Swedlsh It i s d i f f i c u l t t o a c t u a l l y determine however, unless a l a r g e Svensson (1982) measured energy consumption i n homes w i t h MVHX systems and compared i t t o t h e measured consumption i n 15 c o n t r o l houses t h a t had mechanical exhaust t i o n w i t h o u t heat recovery.
Controllable i t varies w i t h weather conditions) and t h a t recovery o f energy the e x f i l t r a t i n g a i r i s n o t possible. infiltration is The major t h a t no investment i s required f o r advantage of purchase, main- the r a t e o f v e n t i l a t i o n by window tenance, o r operation o f v e n t i l a t i o n equipment. In contrast t o i n f i l t r a t i o n , opening can be c o n t r o l l e d t o some degree by opening behavior the occupants. increased w i t h outdoor temperature openable windows (Conan, 1982).