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Zawartość zarchiwizowana w dniu 2022-12-27

COST EFFECTIVE SOLAR HEATING AND LOW ENERGY DESIGN FOR 48 HOUSING UNITS AT WARKWORTH CLOSE, GATESHEAD, UK

Cel

The aim is to demonstrate and evaluate a low cost concept for solar low energy building.
The implementation of the concepts results, according to the calculations, in an overall reduction in the fossil fuel consumption for space heating and domestic hot water use of 76% compared to traditionally built new houses in the U.K. following the existing building regulation.
The proposal presents an integrated solar heating and low energy design with the following innovative elements :
- Solar wall with preheating of ventilation air combined with counter flow heat recovery of heat in the exhaust ventilation air.
* Draught-proofing to reduce natural ventilation levels down to 0.1 air change per hour.
* Simple and cheap solar hot water system coupled to an improved domestic hot water tank, designed for very small heat losses.
* Use of small, cheap, low power gas furnaces for each individual dwelling.
* Use of cavity walls complete filled with insulation.
* Use of improved vapour barriers.

The proposal for combined solar heating and low energy design for 48 housing units at Warkworth Close in Gateshead consists of :
1. INSULATION VALUES :
Roof 0.2 W/m2 deg. C
Floors 0.3 W/m2 deg. C
Walls 0.3 W/m2 deg. C
Floors have 75 mm polystyrene insulation.
Walls are insulated by use of an increased cavity thickness with 100 mm insulation material here. And the roof has 200 mm mineral wool insulation.
2. Windows are low energy windows with 12-15 mm airspace and energy glass (1.5 - 1.9 W/m2 deg. C).
3. The ventilation heat loss is minimised using a solar wall design and counter flow heat recovery of ventilation air (as a passive/hybrid solar heating future). Besides an airtight construction with 0.1 air change per hour is used. The project includes demonstration of both individual and shared heat recovery systems. Solar walls are integrated in 9 gable facades in combination with mechanical ventilation system. 8 houses are built as control houses for comparison.
4. Optimisation of windows, solar wall and constructions, to obtain maximum passive solar contribution to cover the heating demand and at the same time minimising electricity demand for lighting.
5. Use of improved 200 litre DHW tanks in each housing unit, designed with a low heat loss of the total DHW installation.
6. Integration of a very simple and cheap active solar heating design with 2-3 m2 solar collector per housing unit in combination with the mentioned DHW tanks. The solar heating systems are a new type of shared systems with one solar collector for 4-5 dwellings. Expected solar contribution on a yearly basis will be 50-60% of DHW.
7. Use of cheap, low effect, small gas furnaces in each house.

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Koordynator

North British Housing Association (NBHA)
Wkład UE
Brak danych
Adres
4 The Pavilions Portway
PR2 2YB Preston
Zjednoczone Królestwo

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