Systems and methods for enhanced heat transfer loops
The present application pertains to processes and systems for enhanced heat transfer. In some embodiments a process is described for removing a portion of a chemical from a heat transfer loop comprising a heat transfer fluid. The process may comprise adding a solvent to the heat transfer fluid in the heat transfer loop; removing at least a portion of the heat transfer fluid from the heat transfer loop; separating said removed heat transfer fluid into a permeate and a retentate using a membrane; and adding at least a portion of the permeate to the heat transfer fluid in the heat transfer loop.
1 . A process for adding a portion of a chemical to a heat transfer loop comprising a heat transfer fluid wherein the process comprises:
adding the chemical to the heat transfer fluid in the heat transfer loop;
removing at least a portion of the heat transfer fluid from the heat transfer loop;
separating said removed heat transfer fluid into a permeate and a retentate using a membrane; and
adding at least a portion of the retentate to the heat transfer fluid in the heat transfer loop; wherein the chemical comprises a glycol polymer, or a polypropylene glycol (PPG), or a polyethylene glycol (PEG), or a block-polymer, or an EO polymer, or a PO polymer, or a glycol ether, or a glycol ether polymer, or a polyol, or any combination thereof.
2 . The process of claim 1 wherein the retentate comprises the chemical.
3 . The process of claim 1 wherein the permeate comprises a solvent.
4 . The process of claim 1 which further comprises controlling the concentration of the chemical in the heat transfer loop.
5 . The process of claim 1 wherein the volume of the chemical added is about the same as the volume of solvent removed.
6 . The process of claim 1 which further comprises controlling the volume heat transfer fluid.
7 . The process of claim 1 wherein the chemical comprises a glycol polymer.
8 . The process of claim 1 wherein the chemical comprises a polypropylene glycol (PPG).
9 . The process of claim 1 wherein the chemical comprises a polyethylene glycol (PEG).
10 . The process of claim 1 wherein the chemical comprises a block-polymer.
11 . The process of claim 1 wherein the chemical comprises an EO polymer.
12 . The process of claim 1 wherein the chemical comprises a PO polymer.
13 . The process of claim 1 wherein the chemical comprises a glycol ether.
14 . The process of claim 1 wherein the chemical comprises a glycol ether polymer.
15 . The process of claim 1 wherein the chemical comprises a polyol.