Designing heat pump solutions on low temperature networks to maximise building efficiency
The landscape of our cities is evolving with the increase in high-rise, high density residential developments. At the same time, Building Regulations such as Part L are getting stricter to drive lower carbon developments and to ensure targets, such as Net-Zero 2050, are met.
As building fabric is tightened to limit heat loss through the external walls, it is becoming apparent that traditional high temperature systems do not operate effectively within a fabric first approach. Instead, the reduced air permeability has highlighted high system losses from high temperature solutions, trapping waste heat in corridors, lowering overall system efficiency and resulting in a larger than required plant to heat demand ratio.
As a result, building designers are having to look for better performing and increasingly efficient solutions, especially when considering the progression of the Building Regulations and environmental targets.
SPECIFICATION REQUIREMENTS FOR THE NEW HEAT PUMP SOLUTION
The Zeroth Energy System was developed on collaboration with market leading residential developers to ensure its performance was fit for purpose and achieved the progressively stricter renewable compliance, whilst also being financially and practically feasible.
To be a best practice alternative to traditional systems, this new solution needed: • • • •
Increased system efficiency
To provide significant benefits regarding compliance To reduce heat loss from communal pipework
To provide flexibility around the specification of the plant, emitters and controls
• • • •
To fit within the set standard for prefabricated utility cupboards A simplified installation to reduce time on site Ease of service and maintenance for the end user
To be proportionate to the cost of current specified systems THE ZEROTH ENERGY SYSTEM
GDHV’s team of researchers and technicians partnered with industry experts to design and manufacture the innovative Zeroth Energy System for use within high-rise apartment developments.
The Zeroth Energy System is a communal network which has been designed as an alternative to traditional high temperature solutions to offer heating, hot water and cooling services, where required. It is comprised of a compact heat pump and water cylinder in each apartment which is connected to a central low temperature (ambient) water loop, with an energy source housed in a central plant room.
The system provides industry professionals with a communal solution that offers: • • • •
Significant benefits in achieving compliances
Specification flexibility on the plants, emitters and controls Comfort cooling through a two-pipe system
Improved performance through greater efficiencies and reduction of heat losses
• • •
Simplified installation to reduce costs and installation times Ease of maintenance through intelligent design CAPEX savings, including savings on carbon tax
As part of our service offering at GDHV, we will work closely with you throughout the construction process. This includes advice from specification and pre-planning, through to design, Quantity Surveyor discussions and to installation and commissioning.
At GDHV, we are dedicated to the design and development of sustainable HVAC solutions for both commercial and residential projects. Our team of specialists understand what is involved in specifying compliant HVAC systems and are on hand to help you find the most effective solution for your project. We also provide advice on applying these solutions to your designs, using our in-house team of engineers.
Alongside guidance on specification, we are also able to provide a number of CPD presentations, including one on the benefits of low temperature networks and the Zeroth Energy System, which can be delivered in person or virtually.
(Our thanks to Alessandro Pedro, Glen Dimplex Heating & Ventilation for this BKE article)
GLEN DIMPLEX HEATING & VENTILATION 9
BUILD ING KNOWLEDGE EX C HANG E
When it comes to maintenance, we can also provide a fully supported maintenance package for each Zeroth installation (via our UK network of GDHV service engineers), which can be offered direct to the tenant/end user or alternatively to the building’s FM contractor.
GLEN DIMPLEX HEATING & VENTILATION
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