Bitzer 2DESH-2, Reciprocating compressor, Semihermetic, 2 Cylinders

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Compressor description by Ralkin

BITZER ECOLINE H Series - Model 2DESH-2

Introduction

The BITZER ECOLINE H series represents a creative advancement of the proven, robust, and powerful semi-hermetic ECOLINE range. Designed as specialists for demanding conditions such as high-temperature heat pumps and transport applications, this series combines high efficiency, smooth running, and high reliability. It features a reinforced drive gear and a specialized lubrication system, ensuring optimal performance in extreme environments.

Model Identification

Below is the breakdown of the model number 2DESH-2:

2: Number of cylinders.
D: Identification for bore x stroke (indicating a smaller bore compared to 'E' or 'C' in this context).
E: ECOLINE series identifier.
S: Special design for transport applications and high temperature heat pumps.
H: Indicates the special design equipped with an additionally reinforced drive gear and lubrication system.
2: Motor size code.

Technical Features

Reinforced Design: Equipped with an additionally reinforced drive gear and lubrication system, making it suitable for high-temperature heat pumps and transport applications like railway air conditioning.
Valve Plate Design: Features a new valve plate design with a geometric concept for pressure valves for low rear expansion, ensuring high cooling capacity with minimal energy requirements.
Motor Efficiency: Utilizes efficient motors with broadband characteristics, providing high performance under both full- and part-load conditions.
Capacity Control: The CRII system allows intermittent blocked suction for effective capacity control.
Compatibility: Downward compatible with predecessors, maintaining the same connection sizes.

Specifications & Data

While the specific motor variant '2' is not listed in the provided performance table, the technical data corresponds to the base 2DESH model configuration (similar to the listed 2DESH-3Y). The specifications are as follows:

Displacement at 50 Hz: 13.4 m³/h
Heating Capacity (Qh): 11.07 kW (based on R515B at tₑ/t꜀ = 30°C/85°C)
Oil Charge: 1.5 dm³
Weight: 77 kg
Primary Refrigerants: R1234ze(E), R515B, R245fa
Primary Oil Charge: Polyolester oil BSE85K (typically specified for high-temp/transport H-series)
Max. Operating Current (Δ/Y Motor): 15.0 / 8.6 A (Reference data from 2DESH-3Y)

Note: Motor voltage and current ratings may vary slightly depending on the specific motor code (e.g., '2' vs '3Y'). Please consult the specific motor datasheet for precise electrical parameters for motor code '2'.

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