Niagara No-Frost - Evaporator System
Niagara developed and patented the first 'No-Frost' evaporator system to solve a specific refrigeration problem. Since that first patent, Niagara has addressed refrigeration problems with custom equipment for industrial air handling applications, low temperatures applications, and liquid desiccant dehumidification control. Today Niagara handles refrigeration needs for industries ranging from food processing to pharmaceuticals. Niagara has earned an excellent worldwide reputation for superior product design, technical support, and engineering excellence for numerous custom heat transfer applications.
Niagara's goal to provide customers with high quality, innovative products, has lead to the development of a world class in-house research facility.
This 10,000 square foot, environmentally controlled laboratory provides state-of-the-art refrigeration and chemical testing for solving of heat transfer problems.
The facility has a fully integrated Data Acquisition and Control System plus complete refrigeration and engine room capabilities. Here Niagara can test its own products. Additionally, Niagara can test customer products and various requirements in the freezer rooms. Through this research facility, Niagara provides the best in custom heat transfer systems from start to finish.
Moisture is present in our everyday world in many forms. It exists as a solid in the form of ice, snow and frost, as a liquid in the form of water and condensation, and as a vapor in the form of humidity and steam.
Water freezes at 32° Fahrenheit (0° Celsius). Other simple properties of water are that water vapor seeks to be at equilibrium with itself and that water expands as it freezes. All these properties are quite simple but can wreak havoc on refrigerated spaces. Moisture can cause issues such as refrigeration system under design, structural and mechanical problems, overall system deterioration, employee safety concern, bacteria growth, product problems, and poor shelf life.
Niagara Blower's moisture management systems are quite different from conventional cooling based dehumidifiers and air purifiers. Instead of treating the air by cooling to condense moisture, the moisture manager's unique liquid desiccant attracts moisture from the air.
Independent university laboratories have documented the moisture manager's dehumidification effectiveness and its removal of airborne micro-organisms. Refer to research bulletins for control of such contaminants as Listeria, Salmonella, Yersinia, formaldehyde, carbon dioxide, tobacco smoke, and more.
No other manufactured product in the air conditioning industry can solve air quality problems like Niagara's moisture manager. It is designed for production, processing, and storage of our basic food staples.
The Niagara moisture manager's combination of moisture and condensation control, bacteria control, and air pollutant removal is the solution to indoor air quality problems and sick building syndromes for both today and tomorrow.
- No need to oversize entire refrigeration system for defrost
- No structural damage due to thermal shock or ice formation
- Higher co-efficient of performance (COP)
- 'Grabs' the moisture
- Removes bacteria from possible point of contamination and renders them inactive
- Can vary concentration to provide different conditions
- No unscheduled downtime
- Horsepower savings
- Safer, longer life cycle facility
- Lower operating cost
- Keeps the entire facility frost and moisture free
- High quality product with longer shelf life
- System flexibility
- Continuous product output without product rejection
The 'No-Frost' system is comprised of a sprayed coil conditioner and a 'No-Frost' liquid concentrator. The system employs a 'No-Frost' liquid spray to cool air, eliminate frost, control the air dew point, eliminate airborne particles, and deodorize air passing through the spray chamber and evaporator surface.
Niagara's 'No-Frost' is the refrigeration system that provides efficient and continuous control over process air dry bulb and dew point temperatures and even airborne particles, including bacteria such asListeria, Salmonella and Yersiniawith the added benefit of a completely frost-free operation.
In the conditioner, a continuous spray of 'No-Frost' liquid is pumped over the evaporator coil, with the conditioner fan pulling air from the refrigerated space through the spray coil chamber and back into the area. The spray of 'No-Frost' liquid picks up moisture that would otherwise become frost on the coil surface. The liquid then becomes dilute and is circulated to the liquid concentrator which removes the excessive moisture from the liquid using a heat source. The Niagara concentrator maintains the 'No-Frost' liquid at its proper strength automatically and provides the most economical means of removing moisture from a refrigerated space. The amount of dew point depression can be varied by changing the concentration of 'No-Frost' liquid or by utilization of the patented Hygrol method of dehumidification for higher temperature ranges.
Niagara 'No-Frost' conditioners are specifically designed to meet USDA sanitation standard requirements for the food industry.
All interior parts are readily accessible for inspection and cleaning. Interior surfaces are designed to eliminate pockets which could collect dirt, lint, or bacteria. Finishes are smooth and corrosive-resistant. Systems are available in carbon steel or stainless steel construction.
Niagara conditioners are completely accessible through the inlet, discharge or full sized access doors. The casings and drain pans are fabricated of heavy gauge steel of panel construction. Each panel is designed as a structural member. When welded or bolted together, no internal supports are required. Panels may be removed in the field to facilitate inspection. Consult your local Niagara Engineer for complete specifications.
Control logic for the 'No-Frost' system is supplied by advanced microprocessor based circuitry. The system 'brain' is designed to provide operating signals to various control points based on analog sensory inputs such as temperature or pressure. The control center continuously checks the system operation and makes adjustments accordingly in order to maintain peak operating efficiency. The computer 'brain' may be equipped with a communication link (modem) for remote observation, operation, and data logging.