MOST RECENT INSTALLATION IN SINGAPORE

1) Resort World Sentosa - Universal Studio ( 12 sets of wheels in various Primary AHU from 800mm diameter to 2600 mm diameter).

2) Marina Bay Sand Convention Centre North Podium ( 16 sets of wheels from 1500 mm to 3500 mm diameter for high fresh air AHU )

Heat Exchanger "Hi-Panex"

The development for rotary type total heat exchanger at Seibu Giken started in 1970. Since that time, receiving the special subsidy for technological developments from MITI (Ministry of Int'l Trade & Industry) 6 times in total, we have succeeded in realizing several important improvements such as selection of the most suitable material, increasing efficiency, polishing rotor surface, increasing rotor's physical strength and prevention of rotor deflection.
As a result, total heat exchanger rotors, which are ideal and reliable, have been released as Hi-Panex series. The production machinery for honeycomb rotors such as aluminum sheet hygroscopic treatment machines, corrugation machines, winding machines, surface polishing machines and so on have also been developed and assembled by us. Therefore, any honeycomb rotors using a variety of material can be manufactured according to the customer's requirements.
Then, as adsorbent for latent heat (moisture) exchange, ion exchange resin, which adsorbs little odor, has been adopted for the first time in the world. Odor transfer and accumulation is extremely little compared with a former type using silica gel. In 1998, we developed and commercialized "Ion Power Total Heat Exchanger".

Hi-Panex, total heat exchanger cassette is illustrated in the above figure. Hi-Panex rotor is rotated slowly at about 16 r.p.m. in the direction of the arrow. The separator divided the rotor into the exhaust (R>EA) and the supply (OA>SA)-zones. In other words, supply and exhaust air flow alternately through the rotor in opposite direction. Almost all the total heat passing through the exhaust zone is absorbed into the rotor element. The rotor accumulated with heat is rotated half a turn to transfer the total-energy to the air of the supply zone on the other side. Thus, the outdoor air (OA) is taken to the supply air (SA) and the return air (RA) is exhausted to the exhaust air (EA) while the total heat (temperature and humidity) energy is fully transferred to the fresh outdoor air (OA). It can be said, therefore, that the function of this heat exchanger is to supply the fresh air after bringing it close to the room air condition when there is a difference in temperature and/or humidity, and thus save energy.

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Characteristics of Hi-Panex

Excellent corrosion resistance
Ceramic fiber paper as basic materials is prepared for anticorrosive and anti-salt application. Aluminum set is also treated to be anticorrosive.
Washable rotor
Easy connection & assembling even for the large type cassette.
Simple & easy maintenance
Hi-Panex is constructed with thoughtful consideration for easy periodic checking.
Prevention of ammonia gas transfer
When the total heat exchanger is operated, a very small quantity of ammonia gas in the building (from toilet, etc.) passes through the rotor and could be adsorbed with the rotor, and cross-contaminates. In order to prevent this, we are employing a special adsorbent which can only adsorb moisture and pass alkaline gas through into the atmosphere. So the cross-contamination of ammonia gas in the rotor can be completely prevented.

General Application

Type	Material	Heat Exchange	Main Application	Examples	Application Temperature Range
PA	Aluminum sheet	Total	General air conditioning Against corrosion	Office bldg, Institute, School, Theater, Hospital, Hotel	-20 to +80 degrees
		Sensible
PC	Ceramic sheet	Total	Against corrosion Against salt damage	Animal laboratory, Vessel, Swimming pool, Factory	-30 to +80 degrees
		Sensible

Aluminum total heat exchanger

New adsorption material + anti-bacterial, anti-mold material
	We first commercialized the honeycomb rotor for total heat exchangers using aluminum sheet in 1980 as a pioneer.

Hygroscopic treatment for aluminum sheet

First, the anticorrosive treatment is applied to the aluminum sheet. Then, the fine powder of inorganic adsorbent is strongly coated by baking without obstruction the adsorbent's "respiration". Furthermore, to prevent shedding the inorganic adsorbent powder, it is also fixed with porous coating materials. Therefore, the inorganic adsorbent can sufficiently effect adsorbent and desorption. And thus can provide the rotors with high efficiency.

Ceramic total heat exchanger

This rotor is suitable for and actually used at the places such as seashore, indoor swimming pool and factory where anti-corrosiveness is required. Ceramic fiber paper is adopted for this rotor and metal silicate is synthesized into the paper by chemical reactions. We applied a very similar method to SSCR dehumidifier rotor which is also developed by us. As a result, it has high efficiency for exchanging latent heat, superiority in anti-corrosiveness and salt-resistance, and it can be washed by water. We have had many installations in Japan as well as in overseas countries.


Cross Flow Element	Total Heat Exchange Cassette
Material : Plastic Sheet (Polypropylene)	Material : Ceramic Paper, Flame-Proofed Paper, Aluminium

HI-PANEX-Ion Power Total Heat Exchanger-

Odor cross contamination can be solved with

-ION ADSORPTION POWER-

On top of energy saving, reduction of CO2, the new adsorption type
total heat exchanger is an epoch making solution for
enhancement of real I.A.Q .(Indoor Air Quality).

SILICA GEL IS NO LONGER THE BEST DESICCANT.

Total Heat Exchanger, in which the silica gel adsorption material is firmly affixed to aluminum sheets by means of high temperature, is being conventionally unitized. In this case, at conditions of low humidity the adsorbent of the rotor element has additional adsorption capacity, and therefore adsorbs various kinds of odors.

However, when there is a high humidity condition in contrast to the above - displacement adsorption takes place and the adsorbed odor substances are displaced with moisture in the air by means of high hydrophilic characteristic of silica gel. This is a mechanism of odor emission from silica gel when used as the adsorbent for the total heat exchanger.

Although we at Seibu Giken have been preventing the odor problem with total heat exchangers by using a special silica gel, which relatively speaking, does not emit as much as other types, the odor problem could not be resolved.

Since 1993, we changed our approach to the problem and commenced the development of a new adsorbent type total heat exchanger and have succeeded in solving the odor cross contamination problem. (iPatent applied.)

Adsorption by silica gel	Adsorption by Ion

ADDED FEATURE OF ANTI-BACTERIAL AND ANTI-MOLD EFFECTS

Mold is not grown in the total heat exchanger by itself because its material of the heat exchanger is completely inorganic. However, there is a possibility that mold may be grown in the total heat exchanger due to the organic substances flowing from the outside.

Since we at Seibu Giken have utilized not only new adsorption material but also anti-bacterial, anti-mold material, we have successfully countered the odor problem and have achieved real enhancement of indoor air quality (I.A.Q.) with this new adsorption type total heat exchanger. New adsorption material? anti-bacterial, anti-mold material.