Effect of greenhouse design parameters on conservation of energy for greenhouse environmental control
| Autor: | Pitam Chandra, Mathala Juliet Gupta |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Conservation of energy
Mechanical Engineering Environmental engineering Greenhouse Building and Construction Thermal energy storage Pollution Industrial and Manufacturing Engineering Energy conservation North wall Glazing General Energy Environmental science Electrical and Electronic Engineering Arch Civil and Structural Engineering Efficient energy use |
| Zdroj: | Energy. 27:777-794 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/s0360-5442(02)00030-0 |
| Popis: | A mathematical model was developed and used to study the effect of various energy conservation measures to arrive at a set of design features for an energy efficient greenhouse. The Simulation results indicated that under cold climatic conditions of northern India, a gothic arch shaped greenhouse required 2.6% and 4.2% less heating as compared to gable and quonset shapes. An east–west oriented gothic arch greenhouse required 2% less heating as compared to a north–south oriented one. North wall insulation of an east west oriented gothic arch greenhouse saved 30% in heating costs. The use of night curtains reduced the night time heating requirement by 70.8% and daily requirement by 60.6%. By replacing the single cover on the southern side with air inflated double wall glazing, the heating requirement was reduced by 23%. The combination of the design features for an energy efficient greenhouse suitable for cold climatic conditions was found to reduce the greenhouse heating needs by 80%. An internal rock bed thermal storage/retrieval system met the remaining heating energy requirements of the energy-conserving greenhouse. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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