Abstract: A heat pipe comprises a condenser, an evaporator, a working fluid, a displacement vessel and at least one connecting pipe. The volume available for the working fluid inside the displacement vessel is adjustable, said volume being adapted to change by a rotating movement of a body. In one embodiment external heat pipes allow several different heat sources to be connected. Advantages include that the capability of transferring heat can be adjusted and fine tuned to the desired value. Less force is required to rotate the body inside the displacement vessel. No energy input is required to hold the body in a desired position. The construction is simple and inexpensive to manufacture. In particular the construction is easy to manufacture in different volumes, since the diameter of the displacement vessel and rotating body can be the same but with a longer displacement vessel.

Abstract: A particle comprises an inner part and an outer coating. The inner part comprises CaO and the outer coating comprises hydrophobic nanoparticles of a size less than 1 ?m. The particle has an average size of from 1 to 1000 ?m. A device adapted to perform an absorption process comprises at least one such particle. A method for manufacturing such a particle comprises mixing CaO with hydrophobic nanoparticles, and mixing with sufficient energy to obtain particles comprising CaO coated with the hydrophobic nanoparticles.

Abstract: A salt or CaO coated with hydrophobic nanoparticles comprises an inner part and an outer coating, forming a particle with a permeable membrane keeping liquid inside and letting gas pass. Said inner part comprises at least one selected from a salt and CaO and said outer coating comprises hydrophobic nanoparticles. Known machines and processes can get enhanced functionality the particles comprising salt and nanoparticles. For machines working according to matrix and hybrid principles the particles can act as a matrix, thereby substituting expensive matrix material. Further applications include storage of chemical energy. A device is adapted to perform an absorption process, said device comprising at least one particle. Advantages include that corrosion is reduced or even eliminated. The long term stability of absorption machines is increased and migration of salt in liquid and gas phase is avoided.

Abstract: A solar panel comprises a conduit which in the usual way is designed to comprise a heat carrying medium for heat transfer between the solar panel and the surrounding environment. The conduit is placed so that it can be heated by the rays from the sun. The solar panel comprises a chemical heat pump of the type hermetically sealed unity tube with a reactor part, an evaporator/condenser part and a passage there between. The part of the unity tube comprising the reactor part of the chemical heat pump is positioned in heat conducting contact with the first conduit and thereby the part of the unity tube with the reactor part will be heated. The unity tube may be surrounded by a heat insulating part of vacuum jug type comprising an evacuated space between an outer wall and an inner wall. The inner wall may at its outwards facing surface comprise a radiation receiving part adapted to transform solar radiation to heat and which is in heat conducting contact with the first area and the first conduit.

Abstract: A chemical heat pump includes a reactor part (1) that contains an active substance and an evaporator/condenser part (3) that contains that portion of volatile liquid that exists in a condensed state and can be absorbed by the active substance. A channel (4) interconnects the reactor part and the evaporator/condenser part. To heat the reactor part, a portion of this wall is arranged as a solar energy collector, which can result in a very compact structure. In at least the reactor part a matrix (13) is provided for the active substance so that the active substance both in its solid state and its liquid state or its solution phase is held or carried by or bonded to the matrix. The matrix is advantageously an inert material such as aluminium oxide and has pores, which are permeable for the volatile liquid and in which the active substance is located. In particular, a material can be used that has a surface or surfaces, at which the active substance can be bonded in its liquid state thereof.

Abstract: A salt or CaO coated with hydrophobic nanoparticles comprises an inner part and an outer coating, forming a particle with a permeable membrane keeping liquid inside and letting gas pass. Said inner part comprises at least one selected from a salt and CaO and said outer coating comprises hydrophobic nanoparticles. Known machines and processes can get enhanced functionality the particles comprising salt and nanoparticles. For machines working according to matrix and hybrid principles the particles can act as a matrix, thereby substituting expensive matrix material. Further applications include storage of chemical energy. A device is adapted to perform an absorption process, said device comprising at least one particle. Advantages include that corrosion is reduced or even eliminated. The long term stability of absorption machines is increased and migration of salt in liquid and gas phase is avoided.

Abstract: A chemical heal pump includes a reactor part (1) that contains an active substance and an evaporator/condenser part (3) that contains that portion of volatile liquid that exists in a condensed state and can be absorbed by the active substance. A channel (4) interconnects the reactor part and the evaporator/condenser part, In at least the reactor part a matrix (13) is provided for the active substance so that the active substance both in its solid state and its liquid state or its solution phase is hold or carried by or bonded to the matrix. The matrix is advantageously an inert material such as aluminium oxide and has pores, which are permeable for the volatile liquid and in which the active substance is located. In particular, a material can be used that has a surface or surfaces, at which the active substance can be bonded in the liquid state thereof. For example, the matrix can be a material comprising separate particles such as a powder or a compressed fibre material.