Hot water provision
www.heatingandventilating.net Low-carbon hot water solutions
Reducing energy usage and carbon emissions associated with heat in buildings is key to meeting climate goals. In buildings with high hot water demand, the hot water design strategy can be one of the main challenges to ensure maximum energy efficiency while prioritising safety. Andy Green, technical director at Baxi, discusses the options for generating safe, reliable efficient hot water in new buildings
I
n the drive for Net Zero, design engineers must continue to innovate with new and existing technologies to deliver new buildings that use less energy without compromising on comfort. In all commercial and public sector buildings, a focus on low carbon design is now critical to meet our 2050 target, with all-electric solutions the favoured approach. However, where demand for hot water is high, the design strategy for the system can be one of the main challenges to ensure reliability, efficiency and safety within the project parameters. Let’s explore some of the all- electric options and the considerations.
The role of heat pumps
The government has identified heat pumps as one of the favoured technologies to achieve low carbon heating and hot water for net zero buildings. Using refrigerant technology is an attractive
proposition for generating low carbon heat as the potential efficiency of air source heat pumps (ASHPs) can be up to 400% in many cases. This means that for every 1kWh of electricity used to run the heat pump, you get up to 4kWh of heat output.
When installing ASHPs, a number of logistical
factors will need to be considered at the outset including available space and budget. The electrical capacity of the site will be a further consideration, especially where EV charging points are in place. Your chosen manufacturer should be able to advise on the options as well as the latest technologies and designs.
ASHP design options for DHW
When considering domestic hot water (DHW) generation and the specific requirements relating
20 April 2024
DOWNLOAD THE HVR APP NOW
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36
