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Cuts electric and Diesel heating bills by up to 85%

That’s quite a statement. But the track record of the ECONOMIZER speaks for itself. Satisfied customers and consulting engineers involved are on file.

The cost of heating hot water will be reduced by 70% if electricity is the current energy source, and by up to 85% if the source is diesel-fired. The ECONOMIZER is ideal for any situation where hot water (or hot fluid) is required at or below 60 degrees C – and it can be plugged into an existing system.

The Concept: Free energy from the air

Most water heaters are designed to take cold water and spend valuable power and energy heating it to an acceptable temperature. This method is becoming more and more prohibitive as the cost of fuel and electricity soars. The ECONOMIZER, on the other hand, uses the free heat in the air and transfers it to the water – efficiently and cheaply.

There’s nothing new about heat pumps. But never before has the technology of heat transfer been so effectively applied. The ECONOMIZER is the first system that provides the end product – hot water – at the temperature the user requires, without additional input.

The ECONOMIZER is a self-contained, compact unit and it can be plugged into any existing system with ease. There is no need for new tanks and new water feeds.

The ECONOMIZER is sealed and trouble free. It is also fail-safe. It is equipped with automatic fault-finding light indicators, and in the unlikely event of a malfunction, the problem will show up instantly and clearly enabling even an unskilled person to rectify it by following a simple procedure.

The real challenge lies in individual application of Tekniheat’s systems. The system can extract heat energy from water or other fluids instead of air – opening the door to a whole range of industrial uses.

The by-product of the ECONOMIZER system is cold air which may be used for air-conditioning purposes. This can be ducted to any area of choice.

The System and how it works

The ECONOMIZER is coupled directly across the inlet and outlet of the water storage vessel. The water connections to the unit are of a small diameter compared with the system pipes. Typically, the water-pipe connections to the ECONOMIZER are less than 1” diameter.

Three sensing probes are placed in the storage vessel. T1 is situated just above the cold water inlet; T2 just below the level of the standby heater (if applicable) and T3 is situated just above the level of the standby heater but not directly above the element itself (if applicable).

These three thermostats control the whole system.

When the water level at T2 is cold, the ECONOMIZER pumps the cold water from the bottom of the storage vessel to the discharge line via its own circulating pump. This process continues until temperature T1 registers warm water. When this happens the ECONOMIZER switches off automatically. In the unlikely event of a fault occurring, the ECONOMIZER will automatically switch over to standby whether this is a diesel, gas or electric system. Thermostat T3 then takes over and controls the final temperature of the water storage vessel in the normal manner. The ECONOMIZER will supply a 220V AC output on two terminals which will sound an alarm or bring on a light in the event of a malfunction, but at no time will the system lose its hot water supply.

In applications where the system may not be used for a few days, auxiliary heaters would be situated below the level of T2 and automatically heat the water sufficiently to replace the radiation losses. This element would be relatively small in capacity and would not be able to come into operation while the ECONOMIZER is running.

The Principle of the Recalorant water Heater

A refrigerator is designed to extract the heat from an enclosed space to lower the temperature.

A recalorant water heater is the reverse. It takes ambient air into a heat exchanger and extracts the heat from it. This heat energy is taken into the system and is transferred at a higher temperature to the cold water, which thus heated, is stored until needed.

The Only components in the system that use energy are the compressor and the fan.

 

 

Performance & Dimensions 20-50kw

MODEL L W H A B C AIR AMPS
NO. (nom.) (nom.)
(mm) (mm) (mm) (mm) (mm) (mm) (m3/s) (amps)
EC20 1140 860 1000 650 550 350 1.2 25
EC30 1120 1260 1200 1020 700 550 2.0 30
EC40 1120 1260 1200 1020 700 550 2.5 35
EC50 1120 1260 1200 1020 700 550 2.5 35

NOTES
1. Tables take into account expected mains water temperature variations at ambient wet bulbs indicated

2. Noise level 55 dBa at 3m in free field conditions
Manufacturer reserves the right to change specifications without prior notification

 

Performance & Dimensions 100-150kw
ECONOMIZER MODELS EZ100 TO EZ150

MODEL OUTPUT H AIR AMPS* WEIGHT
NO. (nom.) (nom.) (nom.) (nom.)
(kw) (mm) (m3/s) (amps) (kg)
EZ100 100 1200 5.0 60 800
EZ120 120 1480 7.5 100 1000
EZ150 150 1480 7.5 100 1200

NOTES
1. * Power factor correction to reduce amps optional extra

2. 380V 3 ph. Supply

3. Std. Exhaust duct for models EZ120 & EZ150 optional extra

4. Noise level 55dBa at 15m in free field conditions

5. Tables take into account expected mains water temperature variations at ambient wet bulbs

Manufacturer reserves the right to change specifications without prior notification

 

TYPICAL SPECIFICATION

Furnish and install where shown on the drawings, TEKNIHEAT type ECONOMIZER air/water pumps or equal.

HEAT PUMPS

All switches, control lights and monitoring points shall be installed in one box in each machine.

The water temperature leaving the heat pump shall be constant and shall be controlled at 60 deg C with a fluctuation tolerance of plus/minus 1 deg C. The refrigerant shall be R22 and the maximum condensing temperature of the compressor shall not exceed 55 deg C.

Heat pumps shall be coupled in such a way that they shall not stop and start intermittently and shall not run for less than 30 min. at a time.

Each heat pump shall be fitted with automatic evaporator defrost controls which shall be demand controlled as opposed to time clock operation.

A manual reset head pressure control shall be fitted in the box mentioned above.

Each heat pump shall provide a 220V set of contacts in the event of any fault occurring internally.

Each heat pump shall be protected against loss of refrigerant and subsequent damage.

Each heat pump shall be fitted with a chilled water evaporator so that the unit can extract energy from a water circuit instead of the air evaporator. Water at temperatures higher than 9C (nom) shall be cooled on demand without ice formation in the chilled water evaporator.

HEAT PUMP CONSTRUCTION

Unit casings shall be constructed in stainless steel. Condensate drip trays shall be made of fibre glass and condensers shall be constructed from copper or equal considering the operating conditions.

Heat pumps are expected to operate down to –2 deg C ambient temperatures. Ambient temperatures of up to 50 deg C shall not adversely affect heat pump operation.

An external bulkhead alarm light shall be fitted and shall be operated from the heat pumps above.

Heat pump shall be of type ECONOMIZER or equivalent. Preference shall be given to locally manufactured units where local companies can also supply expertise and competent service.

Only machines having a 60 deg C hot water COP of at least 3.1 at 15WB ambient will be considered.

GENERAL

Condensate pipes shall be suitably insulated so as not to allow moisture formation, plastic piping will be permissible.

PERFERENTIAL TREATMENT FOR EQUIPMENT OFFERED

Preference will be given to those tenderes who already have a successful track record of locally produced units running under local conditions.

WARRANTY

Tekniheat warrants this equipment to be free from defects in material and workmanship for a period of 12 months from plant commissioning or 15 months from date of shipment, whichever is the shorter period. Any units or parts proving defective within this period will be repaired or replaced at our option when returned to our factory transportation charges pre-paid. TEKNIHEAT will not be responsible for any installation or removal costs.