Thermojekt® R and RB finned tube heat exchangers
The Thermojekt® R or RB is an efficient heat exchanger for heat recovery from clean and slightly polluted hot air or exhaust gases from oil and gas firing as well as process air up to 400 °C. Higher temperatures are possible on request.
This has a register of 12.5 mm high finned tubes made of high-alloy stainless steel (1.4571 / 1.4521).
The extendable register allows for easy and thorough cleaning. This is necessary if deposits have formed on the heat exchanger surfaces after prolonged operation.
During cleaning, the housing remains fixed. The register is extended after loosening the screw connection.
Flue gas bypass
A bypass built into the heat exchanger allows the flue gases to bypass the register when no heat is needed at times. In this operating mode, the heat transfer is reduced to a residual of about 10% of the heat output.
For cases where residual heat transfer plays a major role, we offer a heat exchanger with an improved bypass system. The bypass flaps in the heat exchanger are moved by a maintenance-free actuator outside the casing. These dampers are controlled by a thermostat or a controller with a temperature sensor at the heat storage tank and the heat exchanger.
Thermojekt® R – finned tube heat exchanger – without bypass
Designation | Alternative label | Item No | Nominal heat output kW | Extractable heat output ** kW | Cooling to approx. °C | Connections for flue gas pipe nominal Ø mm | Water connections inch | Length mm | Width*** mm | Height mm |
---|---|---|---|---|---|---|---|---|---|---|
Thermojekt R70 Thermojekt R70A |
Thermojekt R 3.6V Thermojekt R 3.6VA |
2107416 2108256 |
70 | 8 | 91 | 150 | 1 | 780 | 640 | 280 |
Thermojekt R140 Thermojekt R140A |
Thermojekt R 3.6V Thermojekt R 3.6VA |
2107417 2108257 |
140 | 14 | 112 | 150 | 1 | 780 | 640 | 280 |
Thermojekt R210 Thermojekt R210A |
Thermojekt R 4.6V Thermojekt R 4.6VA |
2107418 2108258 |
210 | 20 | 117 | 200 | 1 | 840 | 640 | 330 |
Thermojekt R250 Thermojekt R250A |
Thermojekt R 5.6V Thermojekt R 5.6VA |
2107419 2108259 |
250 | 25 | 107 | 250 | 11/4 | 900 | 750 | 370 |
Thermojekt R350 Thermojekt R350A |
Thermojekt R 6.6V Thermojekt R 6.6VA |
2107420 2108260 |
350 | 35 | 112 | 300 | 11/4 | 750 | 670 | 290 |
Thermojekt R500 Thermojekt R500A |
Thermojekt R 7.6V Thermojekt R 7.6VA |
2107421 2108261 |
500 | 47 | 120 | 350 | 11/4 | 1010 | 750 | 470 |
Thermojekt R750 Thermojekt R750A |
Thermojekt R 8.6V Thermojekt R 8.6VA |
2107423 2108262 |
750 | 70 | 125 | 400 | 11/2 | 1080 | 840 | 510 |
Thermojekt R1000 Thermojekt R1000A |
Thermojekt R 10.6V Thermojekt R 10.6VA |
2107424 2108263 |
1000 | 91 | 128 | 500 | 2 | 1180 | 840 | 610 |
Model „A“ – pressure-tight – conical seal system Raab Alkon
** The extractable heat output was determined at 280 °C flue gas temperature and a pressure loss of about 30 Pa in the register.
*** At flue gas temperatures of more than 400 °C the width changes for design reasons. Prices and models for appliances above 400 °C on request.
NET finned tube heat exchanger Thermojekt® RB – with bypass for negative pressure systems
2108266
Designation | Alternative label | Item No | Nominal heat output kW | Extractable heat output ** kW | Cooling to approx. °C | Connections for flue gas pipe nominal Ø mm | Water connections inch | Länge mmLength mm | Width*** mm | Height mm |
---|---|---|---|---|---|---|---|---|---|---|
Thermojekt RB70 Thermojekt RB70A |
Thermojekt RB 3.6V Thermojekt RB 3.6VA |
2107425 2108264 |
70 | 8 | 91 | 150 | 1 | 780 | 640 | 300 |
Thermojekt RB140 Thermojekt RB140A |
Thermojekt RB 3.6V Thermojekt RB 3.6VA |
2107426 2108265 |
140 | 14 | 112 | 150 | 1 | 780 | 640 | 300 |
Thermojekt RB210 Thermojekt RB210A |
Thermojekt RB 4.6V Thermojekt RB 4.6VA |
2107427 2108266 |
210 | 20 | 117 | 200 | 1 | 840 | 640 | 340 |
Thermojekt RB250 Thermojekt RB250A |
Thermojekt RB 5.6V Thermojekt RB 5.6VA |
2107428 2108267 |
250 | 25 | 107 | 250 | 11/4 | 900 | 750 | 400 |
Thermojekt RB350 Thermojekt RB350A |
Thermojekt RB 6.6V Thermojekt RB 6.6VA |
2107429 2108268 |
350 | 35 | 112 | 300 | 11/4 | 940 | 750 | 460 |
Thermojekt RB500 Thermojekt RB500A |
Thermojekt RB 7.6V Thermojekt RB 7.6VA |
2107430 2108269 |
500 | 47 | 120 | 350 | 11/4 | 1010 | 750 | 500 |
Thermojekt RB750 Thermojekt RB750A |
Thermojekt RB 8.6V Thermojekt RB 8.6VA |
2107431 2108270 |
750 | 70 | 125 | 400 | 11/2 | 1080 | 840 | 550 |
Thermojekt RB1000 Thermojekt RB1000A |
Thermojekt RB 10.6V Thermojekt RB 10.6VA |
2107432 2108271 |
1000 | 91 | 128 | 500 | 2 | 1180 | 840 | 660 |
Model „A“ – pressure-tight – conical seal system Raab Alkon
** The extractable heat output was determined at 280 °C flue gas temperature and a pressure loss of about 30 Pa in the register.
*** At flue gas temperatures of more than 400 °C the width changes for design reasons. Prices and models for appliances above 400 °C on request.
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