Leading the Transformation in Green Heating and Cooling: No Buffer Domestic Hot Water Generation
The Problem with Traditional Buffer Tanks in DHW Production
In many existing buildings, there is quite limited space for domestic hot water (DHW) production. Historically, they were constructed around fossil gas boilers either as system boilers or standalone hot water generators. Unlike boilers, heat pumps work in a different way and, for a number of reasons, require a buffer tank. These tanks provide a larger volume of water to smooth the operation and maintain the DT. On commercial systems, even small buffers of 1000L can be difficult to fit in; furthermore, many systems require larger buffers, and some manufacturers require more than one in the system.
Challenges and Complexities of Fitting a Heat Pump DHW System
Fitting a heat pump DHW system presents several challenges:
- Space Requirements: Firstly, space to fit a buffer or two and a DHW store can be a significant obstacle.
- Installation Complexity: Secondly, a lot more pipe, fittings, pumps, valves, etc., and labour to install adds to the complexity.
- Control Complexity: Lastly, complex controls make for an expensive system, which can be difficult for FM teams to manage effectively.
These challenges often lead to a system that is not only expensive but also difficult to manage.
Clade’s Innovative No Buffer DHW Solution
At Clade, we have developed a No Buffer DHW solution that is more efficient, simpler, and cheaper. Here’s how it works:
- No Buffer Design: To begin with, additional volume is added to the cylinder above demand for defrost and smooth operation (see table).
- Minimum Requirements: Additionally, if using Acers, 2No is the minimum.
- Reheating Solutions: Moreover, an inline electrical boiler must be used for reheating the DHW-R circuit or immersion heaters within cylinders.
- Temperature Control: Specifically, LTHW on 70-30°C, DHW produced to 10-65°C – Pasteurisation at this temperature takes around 6 minutes.
- Sizing Considerations: Furthermore, PHX and pumps are sized to the summer condition output of ASHPs.
- Cylinder Control: Finally, cylinders work on a 10V, 5V, 0V signal to the ASHPs on temperature sensors within cylinders.
Our No Buffer design offers a more efficient and cost-effective solution, making it an attractive option for businesses looking to upgrade their DHW systems.
Conclusion: Embracing a Greener Future with Clade’s No Buffer DHW
Leading the transformation in heating and cooling, Clade’s No Buffer DHW solution offers a more efficient, simpler, and cheaper alternative to traditional methods. With our innovative approach, we are paving the way for a greener future in heating and cooling.