Micro Renewables
With climate change and rising fuel costs ever prominent in the news Microrenewables are an increasingly more common element in many of our projects.
CRGP has experience of most renewable elements including:
- Bio-Mass
- Heat Pumps
- Solar – thermal and photo-voltaic
- Wind energy
- Rainwater Harvesting
- Heat recovery
Every project is different as is every budget however CRGP strives to include renewable elements in all projects wherever possible. Often a combination of systems achieves an economic solution.
Case Study
Low Carbon Heating and Ventilation System
Langside Parish Church, Glasgow
Heating and Hot Water
Installation includes two air source heat pumps, a high efficiency gas-fired back-up boiler and underfloor heating. This provides an efficient, comfortable heating system that minimises the cost, energy use and carbon emissions to heat the building and to provide hot water. The heat pumps are located externally. They act much like a fridge in reverse, in that they draw warmth from the outside air and, through a heat pump the difference in temperature is multiplied, and used to warm the water entering the boiler, so the boiler has less work or even no work to do, and uses less energy. The heat pumps provide the majority of the heating requirements, around 90% of the time. For the remaining 10% of the time, when it is particularly cold outside, the gas boiler will assist the heating system. Interestingly during a prolonged period of cold weather there was no demand for the boiler to operate.
Heating Distribution
Most areas of the Church have underfloor heating installed. This runs at a lower temperature than conventional radiators, whilst providing the same heat output. Less energy is needed for underfloor heating than conventional radiators.
Ventilation
The Ventilation system has a heat recovery unit installed, this takes the heat from the air being extracted from the church, heat that would otherwise be wasted as it is carried outside. This heat is used to warm the fresh air being supplied into the Church.
