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EP-4737816-A1 - HEAT AND POWER SYSTEM FOR A BUILDING AND A BUILDING COMPRISING A HEAT AND POWER SYSTEM

EP4737816A1EP 4737816 A1EP4737816 A1EP 4737816A1EP-4737816-A1

Abstract

A heat and power system (1) for a building (2) is disclosed. The system (1) comprises: power units (3), supplementary heat units (5), attachment elements (7) and an edge element (9). The power units (3) and the supplementary heat units (5) are arranged to cover the whole outer surface (4) of the building (2), when both being attached to the attachment elements (7) and to the edge element (9). The edge element (9) and the elongated attachment elements (7) are configured to create a number of channels (13) delimited by the outer surface (4) of the building (2) and by the power units (3) and by the supplementary heat units (5). The system (1) further comprises: an inlet (15) and an outlet (17) for the gaseous medium to be transported in and out from the system (1) while being heated by solar radiation or while being cooled. A building (2) comprising a heat and power system (1) is also disclosed.

Inventors

  • MOBERG, ARNE

Assignees

  • Light absorber AB

Dates

Publication Date
20260506
Application Date
20251023

Claims (15)

  1. A heat and power system (1) for a building (2), the system (1) comprises: - a first number of power units (3), - a second number of supplementary heat units (5), - a third number of elongated attachment elements (7), wherein each attachment element (7) is configured to be attached to an outer surface (4) of the building (2) and wherein each power unit (3) and each supplementary heat unit (5) are configured to be attached to at least one of the third number of the attachment element (7), and - an edge element (9) configured to be attached to an edge surface (11) of the outer surface (4) of the building (2), wherein the power units (3) and the supplementary heat units (5) are configured to be attached to the edge element (9), wherein the first number of power units (3) and the second number of supplementary heat units (5) are arranged to cover the whole outer surface (4) of the building (2), when both being attached to the attachment elements (7) and to the edge element (9) being attached to the outer surface (4) of the building (2), wherein the edge element (9) and the elongated attachment elements (7), when attached to the outer surface (4) of the building (2), are configured to create a number of channels (13) delimited by the outer surface (4) of the building (2) and by the power units (3) and by the supplementary heat units (5) attached to the attachment elements (7) and to the edge element (9), wherein the heat and power system (1) comprises: - an inlet (15) for a gaseous medium to be provided to a first channel (13.1) of the number of channels (13) to flow through said channels (13) while being heated by solar radiation passing through the power units (3) and the supplementary heat units (5) or while being cooled by air outside the building (2) and outside the system (1), and - an outlet (17) for the gaseous medium to be transported out from a second channel (13.2) of the number of channels (13) of the heat and power system (1).
  2. The heat and power system (1) according to claim 1, wherein the first channel (13.1) is delimited by a first attachment element (7.1), of the third number of attachment elements (7), arranged to have contact with the edge element (9) when being attached to the outer surface (4) of the building (2), while the remaining attachment elements (7) do not have contact with the edge element (9) when being attached to the outer surface (4) of the building (2).
  3. The heat and power system (1) according to claim 1 or 2, wherein each of the first number of power units (3) is a solar cell unit.
  4. The heat and power system (1) according to any one of the preceding claims, wherein each of the second number of the supplementary heat units (5) is a glass unit, i.e. not a solar cell unit.
  5. The heat and power system (1) according to any one of the preceding claims, wherein the outer surface (4) of the building (2) is an outer surface of a roof of the building (2), wherein the attachment elements (7) and the edge element (9) are configured to be attached to the roof of the building (2).
  6. The heat and power system (1) according to any one of the preceding claims, wherein the gaseous medium is ambient air.
  7. The heat and power system (1) according to any one of the preceding claims, comprising a heat exchanger (19) connected to the outlet (17) and configured for heat exchange between the gaseous medium transported through the outlet (17) and at least one further medium of an energy system (2.1) comprised by the heat and energy system (1) and arranged in the building (2).
  8. The heat and power system (1) according to claim 7, wherein the energy system (2.1) comprises an air subsystem for heating or cooling of the building (2) and/or the energy system (2.1) comprises a hot water subsystem and/or the energy system (2.1) comprises an energy storage subsystem, wherein the further medium is air and/or water.
  9. The heat and power system (1) according to claim 7 or 8, wherein the heat exchanger (19) is connected to the inlet (15).
  10. The heat and power system (1) according to any one of the preceding claims, comprising a heat pump unit (23) connected to the outlet (17) to receive the gaseous medium transported through the outlet (17).
  11. The heat and power system (1) according to claim 10, comprising: - a suction gas exchanger (27) connected to the heat pump unit (23) and connected to a third gas line (19.3) connected to the outlet (17) to receive a portion of the gaseous medium and/or - a further heat exchanger (31) configured for heat exchange between the gaseous medium transported through the outlet (17) and exhaust air from the building and air intended to be provided to building from the outside of the building, wherein the further heat exchanger (31) is connected to the heat pump unit (23).
  12. The heat and power system (1) according to claims 10 or 11 and 7, wherein the heat pump unit (23) is connected to the energy system (2.1) through further carrier lines (26, 26') connected for heat exchange with the refrigerant of the heat pump unit (23).
  13. The heat and power system (1) according to any one of the claims 7 to 12, comprising a number of throttle units (6a, 6b, 6c) configured to control the flow of the gaseous medium through the channels (13) and to control the flow of the gaseous medium to and from the heat exchanger (19).
  14. The heat and power system (1) according to any one of the preceding claims, wherein the power units (3) comprise solar cells for producing electric energy, and the supplementary heat units (5) do not comprise solar cells.
  15. A method of covering an outer surface (4) of a building (2) with a heat and power system (1) that comprises: - a first number of power units (3), - a second number of supplementary heat units (5), - a third number of elongated attachment elements (7), wherein each attachment element (7) is configured to be attached to an outer surface (4) of the building (2) and wherein each power unit (3) and each supplementary heat unit (5) are configured to be attached to at least one of the third number of the attachment elements (7), and - an edge element (9) configured to be attached to an edge surface (11) of the outer surface (4) of the building (2), wherein the power units (3) and the supplementary heat units (5) are configured to be attached to the edge element (9), wherein the first number of power units (3) and the second number of supplementary heat units (5) are arranged to cover the whole outer surface (4) of the building (2), when both being attached to the attachment elements (7) and to the edge element (9) being attached to the outer surface (4) of the building (2), wherein the edge element (9) and the elongated attachment elements (7), when attached to the outer surface (4) of the building (2), are configured to create a number of channels (13) delimited by the outer surface (4) of the building (2) and by the power units (3) and by the supplementary heat units (5) attached to the attachment elements (7) and to the edge element (9), and wherein the heat and power system (1) further comprises: - an inlet (15) for a gaseous medium to be provided to a first channel (13.1) of the number of channels (13) to flow through said channels (13) while being heated by solar radiation passing through the power units (3) and the supplementary heat units (5) or while being cooled by air outside the building (2) and outside the system (1), and - an outlet (17) for the gaseous medium to be transported out from a second channel (13.2) of the number of channels (13) of the heat and power system (1), wherein the method comprises: - choosing the first number of power units (3) depending on the area of the outer surface (4) of the building (2), and - adapting the form, size and number of the supplementary heat units (5) to the remaining area of the outer surface (4) that cannot be well covered by the power units (3).

Description

TECHNICAL FIELD The present disclosure relates to the technical field of heat and power generation. Particularly, the present disclosure relates to a heat and power system for a building and to a building comprising a heat and power system. BACKGROUND In the time of increasing energy demand and at the same time fluctuating prices on the power market it has been important to focus on solutions that may save energy. Efforts have been made to develop energy systems with increased efficiency. There are several heat systems available on the market. One problem with the existing solutions is that the systems often are not visually attractive. Further, it has been realized that further improvements are also needed regarding the efficiency of energy systems. SUMMARY It is an objective of the present disclosure to overcome, or at least alleviate, at least some of the above-mentioned problems and drawbacks. It is a further objective of the present disclosure to provide an efficient heat and power system. These objectives and others are at least partly achieved by the system and by the building according to the independent claims, and by the embodiments according to the dependent claims. According to a first aspect, the disclosure relates to a heat and power system for a building, the system comprises a first number of power units, a second number of supplementary heat units and a third number of elongated attachment elements. Each attachment element is configured to be attached to an outer surface of the building and each power unit and each supplementary heat unit are configured to be attached to at least one of the third number of the attachment element. Thus, the power units and the supplementary units may be attached to one or to several attachment elements. Further, the heat and power system comprises an edge element configured to be attached to an edge surface of the outer surface of the building. The power units and the supplementary heat units are configured to be attached to the edge element. Therefore, the power units and the supplementary units may be attached to the edge element and to at least one elongated attachment element or the power units and the supplementary units may be attached to several elongated attachment elements, preferably to two elongated attachment elements. The first number of power units and the second number of supplementary heat units are arranged to cover the whole outer surface of the building, when both being attached to the attachment elements and to the edge element being attached to the outer surface of the building. The size of the power units may vary regarding the area of each power unit. According to some embodiments standard size power units may be used. The first number of power unit is chosen depending on the area of the outer surface of the building. In many cases, there is an uncovered area of the outer surface of a building that may not be well covered by the power units or if an extended number of power units would be used some of the power units would extend outside the outer surface of the building. Therefore, it has been realized that there is a need of supplementary heat units that, be the form, size and numbers, may be adapted to the remaining area of the outer surface of the building that cannot be well covered by the power units. As a result, the first number of power units and the second number of supplementary heat units together cover the whole outer surface of the building, when both being attached to the attachment elements and to the edge element being attached to the outer surface of the building. Consequently, the whole outer surface of the building is covered creating conditions for an efficient use of the outer surface of the building. Further, the edge element and the elongated attachment elements, when attached to the outer surface of the building, are configured to create a number of channels delimited by the outer surface of the building and by the power units and by the supplementary heat units attached to the attachment elements and to the edge element. The heat and power system also comprises an inlet for a gaseous medium to be provided to a first channel of the number of channels to flow through said channels while being heated by solar radiation passing through the power units and the supplementary heat units or while being cooled by air outside the building and outside the system and an outlet for the gaseous medium to be transported out from a second channel of the number of channels of the heat and power system. As a result, a heat and power system is provided having conditions for an efficient use of the whole outer surface of a building. Further, since the whole outer surface of the building is covered a more visually attractive system is provided comparing to the existing solutions. According to some embodiments, the first channel is delimited by a first attachment element of the third number of attachment elements, arranged to have