JPWO2020065649A5 - - Google Patents

Claims (17)

A thermal storage vessel for use in a thermal system for exchanging heat by fluid flow through a phase change material disposed inside said thermal storage vessel, said thermal storage vessel comprising:
a heat storage container housing;
a fluid inlet and a fluid outlet;
one or more capsules containing the phase change material and defining a plurality of passages configured to direct the flow of the fluid to different portions of the interior of the housing;
and
one or more capsules are positioned in the thermal storage vessel in a different orientation than the other one or more capsules;
heat storage container. 2. The thermal storage container of claim 1, wherein the one or more capsules are oriented laterally with respect to the other one or more capsules. 3. The claim 1 or claim 2 , wherein a longitudinal axis is defined through the heat storage vessel and one or more capsules are oriented at an angle of at least 30[deg.] about the longitudinal axis. heat storage container. 4. Any one of claims 1 to 3 , wherein the capsule positioned within the heat storage vessel has a combination of concave and convex contours defining a gap between the contours of the capsule. The heat storage container according to the paragraph. 5. A thermal storage container according to any one of the preceding claims, wherein the one or more capsules are horizontally oriented and the one or more capsules are vertically oriented. the actual length of fluid flow through the capsule from the fluid inlet to the fluid outlet is greater than the length measured between the fluid inlet and the fluid outlet in the general direction of flow; 6. A heat storage vessel according to any one of claims 1 to 5 , which is long. 7. The thermal storage vessel of any one of claims 1-6 , wherein the plurality of passages are configured to induce a tortuous flow of the fluid inside the housing. 8. A thermal storage vessel according to any preceding claim, wherein the thermal storage vessel comprises one or more turbulence generators. A method of exchanging heat with a fluid flowing through a heat storage vessel, comprising:
inserting the fluid into the thermal storage vessel through a fluid inlet;
exchanging heat between the fluid and a frozen phase change material inside a section of the heat storage vessel;
modifying the flow direction of the fluid by at least 30° with respect to the longitudinal direction of the heat storage vessel;
repeating the replacing and modifying steps at least one more time in another portion of the thermal storage vessel;
outputting the fluid from the heat storage vessel through a fluid outlet;
A method, including 10. The method of claim 9 , wherein said modifying step is by causing a tortuous flow of said fluid inside said thermal storage vessel. The actual length of fluid flow from the fluid inlet through the section to the fluid outlet is measured between the fluid inlet and the fluid outlet through all of the sections through which the fluid flows. 11. A method according to claim 9 or claim 10 , longer than the direct length. 12. A method according to any one of claims 9 to 11 , wherein said modifying step is by orienting a capsule sideways with respect to another capsule . 13. A method according to any one of claims 9 to 12 , further comprising generating turbulence over the heat exchange surface of the capsule. 14. A method according to any one of claims 9 to 13 , further comprising generating a serpentine flow over the heat exchange surface of the capsule. 15. A method according to any one of claims 9 to 14 , wherein said modifying step is by alternating flow between turbulent and tortuous flow within said thermal storage vessel. 16. A method according to any one of claims 9 to 15 , wherein the fluid flow is highly turbulent in at least 35% of the fluid flow paths within the thermal storage vessel. 17. Any one of claims 9 to 16 , wherein the fluid flow produces a heat transfer coefficient greater than 100 W/( ^m2 *K) in at least 35% of the fluid flow paths within the heat storage vessel. described method.