YGHP remove the confusion within low temperature heat networks…
Low temperature heat networks are seen (and rightly so) as a real credible alternative to helping achieve a reduction in carbon emissions. The domestic energy demand of buildings is responsible for one third of the worlds final energy consumption and produces the largest amount of greenhouse gas emissions of all sectors.
This is due to utilisation of combustion processes of mainly fossil fuels to satisfy the heating demand of the building stock. Low temperature district heating will contribute greatly improving efficient use of energy resources alongside better integration of renewable energy and or surplus heat.
Q: Do I need a proven low return temperature?
A: BS EN 14511 recommends a heat pump with a flow and return temperature of 45°C and 40°C respectively.
Companies promoting VWART for low temperature systems is a sales technique rather than technical ability to achieve results.
Q: DHW at 45°C to 50°C, can this be achieved on a low temperature network?
A: Yes, considerations should be given to:
- Is a requirement to store DHW? Use 45°C (to maximise COP) from the heat pump, increase / top up temperature with a low powered immersion heater within the stored water cylinder.
- Increase the low temperature heat network to 55°C (lose a little COP) DHW can be set at 45°C or 50°C. Ensure primary flow rates are calculated to ensure you have enough volume for heat transfer.
For more information regarding low temperature heat networks please feel free to contact YGHP directly:
Telephone: 01543 396300