Liquid Delivery System Technology

How is My Power Being Wasted?
Present-day designs with head pressure controls were developed some 59 years ago. Higher head pressures and temperatures were designed into the system so it would function well at lower outdoor temperatures. These higher pressures were needed to deliver the refrigerant to the cooling coils. Power costs a half-century ago were not a factor, so the added cost of operation with lower efficiency didn't matter.

At today's power costs, inefficiency is an unacceptable part of your overhead.

How Does Hy-Save Technology Eliminate Waste?
The people at Hy-Save took a fresh look at the problem. The solution was so simple, yet so effective, it has surpassed all other technology.

By increasing the pressure of the liquid refrigerant with LPA, it becomes subcooled and cannot "flash". With this simple process, head pressure controls can be eliminated or drastically reduced.

An engineer's Pressure-Enthalpy diagram shows the work (electricity) and the net refrigeration effect.

In 1988, the U.S. Bureau of Standards judged Hy-Save's LPA technology to be one of the top energy-related inventions in the nation.

Protect Your Equipment with the Hy-Save LPA-Engineered System
Your refrigeration and air conditioning equipment works hard to supply your cooling needs.

Unfortunately, the harder your equipment works, the more it costs to operate and maintain. Overheated compressors not only fail sooner, but require expensive maintenance to repair or replace.

Cooler compressors mean longer life. Repair costs have been reduced by as much as 75%.

Facts About the LPA System

LPA systems are engineered to integrate into the basic refrigeration/air conditioning cycle.

The Hy-Save patented process overcomes line losses and eliminates "flash gas" at any head pressure.

Pumping liquid refrigerant is up to 40 times more efficient than using head pressure to do the same work.
(See Copeland Compresser Data)

More unwanted heat is dissipated outdoors and not recycled back into your cooling coils.

A significant increase in evaporator capacity is created, resulting in an increase in the net refrigeration effect.

The pump is a semi-hermetically sealed unit with important design features.

The impeller floats in a revolving magnetic field and is the only moving part.

The magnetic flux is supplied by an external motor with a magnetic coupling device. Because the motor is extenal to the system, a burnout cannot contaminate the system.

The external placement of the motor eliminates any addition of heat back into the system. (See Inside View.)

In the unlikely event of a motor failure, your system will continue to operate. The pump is designed to be completely passive.

Compressor manufacturers agree that the design and location of the LPA means it cannot hinder the system and will probably increase compressor life considerably.

What About Superheat Suppression?

This process injects liquid refrigerant into the hot discharge line of your compressor. The reduction of the superheated vapors from the compressor greatly enhances the efficiency of the condenser. A more efficient condenser increases the overall performance of the system.

While the values of this process have been known and used in large ammonia plants, it was not feasible on other systems without adding work to the compressor.

With the advent of the LPA, this was a natural. A small portion of the pressurized liquid refrigerant provided by the LPA can be diverted back to cool these hot superheated vapors. Cooler condensers mean higher efficiency.

The Acid Test
The injection process has greater benefits at hotter temperatures. Hy-Save selected the severe conditions of the California desert for testing.

Even at temperatures of 113 degrees, savings of over 20% were recorded.

Are Manufacturers Using the LPA?

Yes, some of the more progressive manufacturers now use this process on all their equipment. Many more will add it to your equipment upon request.

Burley Ice Rinks, Inc. reports their design using the LPA has reduced operating costs by over 50% when compared with their competitors.

Who Buys This Equipment?
From Mackenzie Bay, 150 miles north of the Arctic Circle, to South Africa and from the Far East to the European continent, all have seen the benefits of this technology. Over 20,000 systems have been installed.

Companies that demand operating efficiency in their organizations expect to cut their costs. We can help.

Engineering Evaluation of Your Equipment
The equipment user, not the manufacturer, pays the monthly power bills. Hy-Save can give you a completely unbiased report.

An analysis of your particular system and its applications will show where and why you are wasting power. After installing thousands of systems, we know where to look and how to apply!

What Kind of Investment Are We Talking About?
Most applications will return your investment in about two years...a 50% return on your money. Your accountant will tell you that this is a wise use of resources.

If your equipment is in poor condition or we suspect conversion is not a good investment, we will tell you. You be the judge. We continue to grow by satisfying customers.

Jack Mandeville
Iolab Corporate Engineering
A Johnson & Johnson Company

"The LPA modification to the refrigeration system reduced the load onthe compressors and increased the refrigeration capacity. Based on the monitored information, refrigeration capacity was increased by 8 percent and estimated annual energy use was reduced by 15 percent."

B C Hydro
Guides to Energy Management #C-839

"Once installed, acting a little skeptical, I closely monitored ourbuilding from our Tracer Direct Digital Control system....Review of the utility billsshows a savings of over $4,000.00 during the three (3) months of cooling."

Lou Taylor
Corporate Facilities Engineer
Brim Corporation