The overall aim is to provide heating and cooling to residential and tertiary buildings with lower emissions, energy bills and fossil fuel dependency. Moreover, the project will bring performance increasing, cost reduction through also an optimised size and installation cost reduction, increased reliability in lifetime and reduced maintenance as well as their integration in 5 Technology packages (TPs).

5 different technology combinations, known as Technology Packages (TP), are supplied to the demo sites, combining the technologies listed below. One of the main goals of SunHorizon is to introduce technology innovations to be firstly validated at laboratory scale and, finally, on real demo-site applications.

Individual technologies included in SunHorizon project, and relative energy needs covered.

The technologies will be properly managed by a cloud-based functional monitoring platform with services such as demand prediction, proactive and predictive maintenance tools, or a hybrid advance controller (supported by a smart user interface). The services will help on maximising solar exploitation and give to the manufacturer inputs for new installation design.

The TPs will be demonstrated in the 8 SunHorizon demo sites (9 buildings).

SunHorizon TPs

The demo sites needs are supplied with 5 different technology combinations, that combine the following technologies:

  • Heat Pumps: FAHRENHEIT, BDR Thermea Group and BoostHEAT
  • Solar technologies: TVO Solar, BDR Thermea Group, and DualSun
  • Storage: Ratiotherm and BDR Thermea Group

Integrating solar and heat pumps technology aims to cover the whole H&C demand of the building in order to maximise solar self-consumption and guarantee adequate internal comfort.

The 5 SunHorizon TPs are:

  1. Innovative gas-fired heat pump with high-vacuum panels
  2. Innovative gas-fired heat pump with improved PVT solar panels
  3. Hybrid adsorption-compression chiller with high-vacuum solar panels
  4. Brine water heat pump assisted with improved PVT solar panels
  5. Hybrid adsorption-compression chiller with high-vacuum solar panels innovative gas-fired heat pump
SunHorizon TPsSolar-HP integration conceptDescription
TP1TVP+BHParallel integrationTVP for space heating + DHW; BH to cover non solar periods
TP2DS+BHMixed solar-assisted/ parallel integrationBH for space heating + DHW support; DS PV-T thermal output to assist BH evaporator and cover preheating of demand; + electricity for appliances
TP3TVP+FAHRSolar-driven HP for coolingTVP for space heating + DHW in winter + activation of the thermal compressor of the adsorption chiller (FAHR) for cooling in summer
TP4BDRMixed solar-assisted/ parallel integrationDS PV-T thermal output coupled with heat pump to cover part of SH and DHW heat demand + electricity production to cover reversible HP electricity consumption
TP5TVP+BH+ FAHRMixed solar-driven/ parallel integrationTVP for space heating + DHW; BH to cover non solar periods; FAHR adsorption chiller activated only by BH or also by TVP
Technology package 1 (TP1):

TP1 consists in a parallel integration of TVP solar collectors to cover most of the heating demand (space heating and domestic hot water) and BH to cover non-solar periods. Via the stratification system the solar heat use is maximized. TP1 is applied in an apartment building in Berlin (Germany).

Technology package 2 (TP2):

TP2 has DS PVT panels which thermal output assists the BH evaporator and covers preheating of demand, enhancing the HP performance. Furthermore, the electricity needs are covered with the photovoltaic output. TP2 is applied in an apartment building in Nurnberg (Germany), two single-family houses in Riga (Latvia) and in a swimming pool centre in Verviers (Belgium).

Technology package 3 (TP3):

TP3 has TVP collectors to cover the heating demand in winter, while in summer the solar output drives the adsorption chiller from Fahrenheit to meet the space cooling needs. TP3 is applied to a tertiary building in Sant Cugat, replacing the constant speed HP currently installed, which is electrically- driven.

Technology package 4 (TP4):

Similarly, with TP2, two variants of TP4 are proposed in Madrid and Piera demo sites relying on reversible HP from BDR, dual production of solar heat and electricity, versatile thermal storage. In Madrid, 9-apartments building, the COP of the BDR brine/water HP benefits from both thermal and electricity outputs of the DS hybrid PVT panels while air/water HP is used as back up. The electricity production covers the HP’s consumption and the dwellings demand. In Piera residential building, BDR solar thermal panels reduces the DHW request on the reversible air/water BDR HP while it can be activated to store BDR photovoltaic panels electricity either as heat or cold in the thermal storage, thus maximising the electricity self-consumption.

TP4 (BDR + DS)
TP4 presentation (BDR only)
Technology package 5 (TP5):

TP5 is composed by TVP solar collectors, RT high stratification storage tank, FAHR hybrid chiller and the BH thermal HP. The hot water produced by TVP is stored in the high stratification RT tank, providing high temperature to the adsorption input and for DHW and space heating. The chilled water produced by FAHR hybrid chiller is stored in a smaller tank and then delivered to the space cooling system. During winter the pre-heated water by TVP is delivered to the BH unit that, if necessary, heats it up to cover the space heating and DHW demand.

Expected impacts

The following table shows the detailed performance expected of each technology package.

SunHorizon TPs
Solar-HP integration concept
Results from simulations:
TP1TVP+BHParallel integrationIn Berlin: 43% of primary energy savings, and 37% of costs savings for the user
TP2DS+BHMixed solar-assisted/ parallel integrationIn Nurnberg: ~ 33% of primary energy and costs savings, 80% of electrical self-consumption ratio (SCR).

In Verviers: ~25% of primary energy and costs savings. 95.1% of SCR.

In Riga: ~37% of primary energy and costs savings. 43% of SCR
Solar-driven HP for coolingIn Sant Cugat: ~35% of primary energy and costs savings
TP4BDRMixed solar-assisted/ parallel integrationIn Madrid: ~76% of primary energy and 84% of costs savings, and 37% of SCR

In Piera: ~59% of primary energy and 53% of costs savings, and 47% of SCR
TP5TVP+BH+FAHRMixed solar-driven/ parallel integrationFor tertiary building the primary energy saving ranges from 19% to 57% depending on the location.

For the multifamily residence building the primary energy saving ranges from 33% to 41%
Technology package performance

Please, you can find more information on the “Innovate heat pump solutions: the SunHorizon Technology Packages” by SunHorizon, published by REHVA, here.

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