ELGE Shell & Coil Heat Exchanger

BA HERCS, CORP HEAT EXCHANGER RECOVERY & CONTROL SYSTEMS ELGE "A STEP AHEAD"

ELGE Shell & Coil Heat Exchangers

Type A and AR

General Description

At ELGE we have constructed a series of heat exchangers with optimum designs to suit operating conditions inherent to subscriber stations in District Heating Systems and Central Heating Systems.

DESCRIPTION

ELGE Shell & Coil Heat Exchangers are designed for different environments such as water-water and steam-water.

They are designed according to the counterflow principle for best thermal properties, at either full load or part load.

The heating surface in ELGE Shell and Coil Heat Exchangers is unique. The copper tubes are coiled in layers with a spacer element in between. The tubes are given an oval cross section when coiled. The collection chamber, where the copper tubes open out, comprises a specially designed collection chamber for optimum flow. The connecting ends of the copper tubes, which are connected to the collection chamber, are round - this is to provide low inlet and outlet velocities.

ELGE Shell & Coil Heat Exchangers are very compact since the smooth copper tubes are spun around a small core. The small outside dimensions and the low total weight facilitate the handling of the heat exchangers.

ELGE Shell & Coil Heat Exchangers have fiberglass insulation. This has a long life span and is not affected by for example, welding. The insulating material is covered with stainless steel jacket, a surface which is insensitive to impact and knocks. To provide extra strong protection against damage during transportation and installation, the insulation walls are made of thick sheet steel and are anchored to the pressure vessel. The insulation can be easily removed to provide access for inspection of the pressure vessel.

ELGE Shell & Coil Heat Exchangers are easy to install and connect. The adjustable floor stand facilitate setting up and long pipe ends facilitate connection.

ELGE Shell & Coil heat Exchangers type A and AR are manufactured according to the ASME Code. Quality Assurance Standard and has an optional ASME U-Stamp. ELGE Shell & Coil Heat Exchangers are available in a wide range of sizes. This range increases the potential for finding the optimum solution where oversizing is reduced to the minimum in terms of capacity and space requirements.

Technical Description

SCOPE OF APPLICATION	PRESSURE AND TEMPERATURES
Type A & AR cover a complete range of applications for radiators, ventilation, geothermal heating, domestic hot water, and dryings system. Type A is for steam to water Type AR is for water to water	MAWP: 250 psi at 300 °F / 17 bar at 150 °C MAWT: 375 °F at 150 psi / 190 °C at 10 bar ASME STAMPED: 400 psi @ 600 °F (Optional
HEAT TRANSFER MEDIA	CONNECTIONS
The heat exchangers are designed for water-water, steam-water and glycol compound applications.	Type A & AR : Shell connections: Steel for welding Coil connections: Copper for brazing
COIL	NAME PLATE
The coil is manufactured from fully-drawn, smooth, spiral wound copper tubes with an oval cross section. The tubes are separated by spacer elements, which form channels where the flow area is smooth and uniform. The copper tubes are joined to a molded collection chamber, which provides low flow resistance.	According to the ASME Code
SHELL	QUALITY ASSURANCE
The shell is made from pressure vessel sheet metal, which complies, with the ASME standard.	Assurance Standard and has an optional ASME U-Stamp. All sizes are CRN- registered.
INSULATION	FOOT STAND
The insulation comprises R13 fiberglass insulation, covered with a stainless steel jacket. The insulation can be easily removed.	Feet can be adjusted for standing installation

BA HERCS Corp., 25-70 Ulmer Street College Point,

New York 11354, USA Phone (001) 718 539 4893

Fax (001) 718 886 4301