Publication

Two-Stage Heat Pump using Oil-Free Turbocompressors – System Design and Simulation

Publications associées (246)

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A new type of air-water heat pump has been developed with the aim to cover an extended application range in high temperature residential heating (for retrofitting existing oil or gas boilers in hydronic heating systems). The base heat output is about 10 kW ...

2002

Development of a large-scale biocalorimeter to monitor and control bioprocesses

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Calorimetry has shown real potential at bench-scale for chem. and biochem. processes. The aim of this work was therefore to scale-up the system by adaptation of a std. com. available 300-L pilot-scale bioreactor. To achieve this, all heat flows entering or ...

2002

Contribution to the heat integration of batch processes (with or without heat storage)

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This work addresses the indirect heat integration (i.e. resorting to intermediate heat storage) and the direct heat integration (i.e. heat exchanges between coexisting process streams) of batch processes. Tools and methods for the targeting of these two li ...

EPFL2002

The development and characterization of a high resolution bio-reaction calorimeter for weakly exothermic cultures

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A unique bench-scale heat flux calorimeter is described, which is capable of detecting the low heat signal of an animal cell culture (a max. of 200 mW/l is produced with a batch culture of SF9 insect cells). After the tech. modifications that enhanced the ...

2002

District Heating in the City of Tokyo: A Case Study using a new Integrated Simulation Environment.

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This paper aims to illustrate a new holistic modeling environment through a case study implementing a district heating system to supply four groups of users identified in the city of Tokyo. The holistic modeling environment, called DOME (Distributed Object ...

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Oil Migration on Single and Two Stage Heat Pump Systems (Calibration Tests and Process Design Phase 1)

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The subject of this project is to develop a high performance air water heat pump which is able to be introducted in the retrofit market. The system requirements of this market are heating temperatures of 65°C, at ambient temperatures descending until -12°C ...

2001

Indirect and Mixed Direct-Indirect Heat Integration of Batch Processes Based on Pinch Analysis

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This paper introduces a methodology for the heat integration of industrial batch processes. Based on Pinch Analysis principles, this methodology resorts to intermediate heat storage to prevent adverse effects on the operating flexibility. A systematic proc ...

2001

Synthesis of ZSM-5 coatings on stainless steel grids and their catalytic performance for partial oxidation of benzene by N2O

Albert Renken, Lioubov Kiwi, Benoît Louis, Pierre Reuse

The hydroxylation of benzene was carried out over a structured catalytic bed of ZSM-5-coated stainless steel grids. The catalysts demonstrated a 97% selectivity to PhOH at benzene conversion 11%. In addn. to achieving the same reactivity as traditional zeo ...

2001

Wärmepumpe mit Zwischeneinspritzung bei Scrollkompressoren.

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This project is evaluating a heat pump cycle with midstage injection at scroll compressors. The injected refrigerant is evaporated partially by an internal heat exchanger (fig. 2.1). A glycol-water heat pump with 12 kW heat capacity at B-5/W50 was built an ...

2000

Process Integration: From Continuous to Batch Processes.

Daniel Favrat, Pierre Krummenacher

Among the structure independent approaches of process integration, pinch technology has been shown for continuous processes to be extremely powerful to develop energy efficient processes and enhance synergic effects within and between processes. The earlie ...

2000

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