FIELD: refrigeration; heat engineering.
SUBSTANCE: invention relates to refrigeration and heating technology, in particular to liquid working compositions for use as an intermediate coolant or low-freezing coolant. Coolant contains, wt%: calcium nitrate 45.0, isopropanol 10.0, potassium dichromate 0.50–1.0, water – rest.
EFFECT: reduction of corrosion activity, the use of coolant in a wide range of temperatures: from 0 °C to -30 °C and reduction of its cost.
1 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| HEAT CARRIER AS ANTIFREEZE | 1997 |
|
RU2116326C1 |
| COOLING AGENT | 2002 |
|
RU2215768C1 |
| COOLANT | 2011 |
|
RU2489467C2 |
| PHOSPHORIC ACID-BASED COMPOSITION FOR METAL SURFACE PHOSPHATING | 2023 |
|
RU2817628C1 |
| PROCESS LIQUID FOR LIQUIDATION (LONG-TERM SUSPENSION) OF OIL AND GAS WELLS (2 VARIANTS) | 2016 |
|
RU2650146C1 |
| HEAVY PROCESS FLUID, COMPOSITION AND METHOD FOR ITS PREPARATION, METHOD OF WELL KILLING WITH HEAVY PROCESS FLUID | 2023 |
|
RU2817459C1 |
| COOLANT FOR THERMAL STABILISATION OF PERMANENTLY FROZEN GROUND | 2014 |
|
RU2577056C1 |
| HEAVY PROCESS FLUID, COMPOSITION AND METHOD FOR ITS PREPARATION, METHOD OF KILLING WELLS WITH HEAVY PROCESS FLUID | 2022 |
|
RU2813763C1 |
| HEAT-TRANSFER LIQUID | 2005 |
|
RU2296790C1 |
| CONCRETE MIX | 2012 |
|
RU2515639C1 |
