Unlock instant, AI-driven research and patent intelligence for your innovation.

Non-aqueous heat transfer fluid and use thereof

一种传热流体、热交换系统的技术，应用在低毒配制流体领域，能够解决有毒、添加剂有毒等问题，达到降低过热、防止空化腐蚀、降低损失的效果

Inactive Publication Date: 2006-07-19
EVANS COOLING SYST INC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] Additionally, some additives themselves, such as borates, phosphates and nitrites, are considered toxic
Thus, not only do all known coolant concentrate formulations containing additives involve the need for heat, vigorous stirring, and prolonged time for the water to react and the additives to dissolve, but the additives themselves are sometimes toxic

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-aqueous heat transfer fluid and use thereof
  • Non-aqueous heat transfer fluid and use thereof
  • Non-aqueous heat transfer fluid and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] This corrosion test was performed using the test procedure described in ASTM #D-1384 (Revised Edition). Six substances, which are typical metals found in engine coolant systems, were completely immersed in the test coolant contained in glass vessels. Coolant "A" is a non-aqueous heat transfer fluid of the present invention in which the proportion of polyol is 100% PG. Coolant "B" is a conventional engine coolant formulation consisting of EG-based antifreeze concentrate mixed with water.

[0110] In the ASTM test procedure, the coolant is aerated with air bubbling through a glass vessel and maintained at a test temperature of 190°F (88°C) for 336 hours. This procedure was changed to more accurately reflect the conditions experienced by metals in engine coolant systems in service. Tests were conducted at a control temperature of 215°F (101.6°C) to simulate heavy-duty use. Coolant "A" was tested without an air charge in order to more closely approximate operation in non...

Embodiment 2

[0116] Corrosion testing is performed to determine the amount of corrosion of cast aluminum or magnesium alloys in engine coolants under heat rejection conditions. A sample of cast aluminum alloy typically used in an engine cylinder head or cylinder block is contacted with a test engine coolant solution. Coolant "A" is a non-aqueous coolant of the present invention consisting of 100% PG. To simulate the operating conditions of coolant systems using coolants other than water, tests using Coolant "A" were conducted at a temperature of 275°F (135°C) and a pressure of 2 psig (13.79kPa), which is slightly higher than Atmospheric pressure. Test coolant "B" contained corrosive water as specified by ASTM and was used to make up the water portion of a 50 / 50 PG / EG water coolant. The test conditions for Coolant B were to simulate the conditions in an aqueous coolant engine cooling system, a temperature of 275°F (135°C) and a pressure of 28 psig (193 kPa).

[0117] For each test, the h...

Embodiment 3-

[0119] Embodiment 3-field test

[0120]

Metal

Δweight (mg)

Coolant "A"

ASTM standard

cast iron

aluminum

steel

copper

solder

brass

initial pH

Final pH

-2.8

+0.2

-1.1

-1.3

-3.7

-0.9

+7.1

+6.9

-10

-30

-10

-10

-30

-10

NA

NA

[0121] Preparation

[0122] The non-aqueous heat transfer fluid of the present invention can be prepared by the following method. Non-aqueous heat transfer fluids can be prepared in a batch process. First, calculations must be made to determine the required quantities of each ingredient. For example, perform the following calculations to determine the amounts of ingredients to mix 6500 gallons of non-aqueous heat transfer fluid:

[0123] 1. Determine the approximate weight of 6,500 gallons of final product;

[0124] a. From the desired weight percent PG (%PG) in the polyol portion of the formulated c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
loss percentageaaaaaaaaaa
boiling pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as for example propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.

Description

[0001] related application [0002] This application is a continuation-in-part of US Patent Application Serial No. 09 / 910,497, filed July 19,2001. field of invention [0003] In general, the present invention relates to the essence of heat transfer fluids used in heat exchange systems, such as coolants for internal combustion engines, coolants for electrical or electronic components, heat transfer fluids for solar heating systems, or for maintaining temperature in industrial processes Non-aqueous, low toxicity heat transfer fluid. The invention also relates to a compatible low toxicity formulated fluid for absorbing residual water from a heat exchange system formulated for installation of said non-aqueous heat transfer fluid. Background of the invention [0004] Heat transfer fluids are used for a variety of purposes. One common use of heat transfer fluids is as a coolant for internal combustion engines. Most heat transfer fluids in use today contain water mixed with ethy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/00C09K3/18C09K3/00C09K5/08C09K5/10C09K5/20C23F11/08C23F11/12C23F11/14C23F11/18F28F19/00
CPCC09K5/20C23F11/08C09K5/10
Inventor 约翰·W·埃文斯J·托马斯·莱特
Owner EVANS COOLING SYST INC