US 12,298,044 B2
Multicascade heating system
Andrey Dobkin, Maalot (IL); and Mikhael Sitkovsky, Carmiel (IL)
Assigned to N. A. M. TECHNOLOGY LTD., Maalot (IL)
Appl. No. 18/252,132
Filed by N. A. M. TECHNOLOGY LTD., Maalot (IL)
PCT Filed Nov. 1, 2021, PCT No. PCT/IL2021/051292
§ 371(c)(1), (2) Date May 8, 2023,
PCT Pub. No. WO2022/097134, PCT Pub. Date May 12, 2022.
Claims priority of application No. 278561 (IL), filed on Nov. 8, 2020.
Prior Publication US 2023/0400227 A1, Dec. 14, 2023
Int. Cl. F25B 1/10 (2006.01); F25B 29/00 (2006.01)
CPC F25B 1/10 (2013.01) [F25B 29/003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A multi cascade heating system comprising:
a plurality of heat-pump circuits successionally connected, wherein the heat-pump circuits are connected to one another by a common heat-exchanger;
wherein each heat-pump circuit further comprises:
a condenser; and
a refrigerant circulating in the heat-pump circuit for heating a fluid flowing through the condenser; and
wherein the fluid is successionally passing through the condenser of each heat-pump circuit so that the temperature of the fluid is higher in each succeeding condenser as it passes towards an outlet of the multi cascade heating system while heat not utilized by the condenser for heating the fluid is exploited for heating the refrigerant of a succeeding heat-pump circuit by the common heat exchanger.