Application of TTRS Method in Industrial Practice Tolerance specification for Industrial Cooling Water Pumps

1999 ◽  
pp. 251-260 ◽  
Author(s):  
O. W. Salomons ◽  
R. E. Begelinger ◽  
E. Post ◽  
F. J. A. M. van Houten
Keyword(s):  
Cooling Water ◽  
Industrial Practice ◽  
Tolerance Specification ◽  
Water Pumps

scholarly journals Operating and economic conditions of cooling water control for marine steam turbine condensers

2011 ◽  
Vol 18 (3) ◽  
pp. 48-54 ◽  
Author(s):  
Andrzej Błaszczyk ◽  
Jerzy Głuch ◽  
Andrzej Gardzilewicz
Keyword(s):  
Economic Analysis ◽  
Steam Turbine ◽  
Water Flow ◽  
Power Plants ◽  
Cooling Water ◽  
Economic Conditions ◽  
Water Control ◽  
Water Pumps

Operating and economic conditions of cooling water control for marine steam turbine condensers The article presents the operational and economic analysis of controlling the cooling water flow in marine steam turbine power plants. The analysis bases on selected designs of the main condenser cooling water pumps and makes use of the results of investigations performed in inland power plants. Special attention was focused on marine aspects of the operation of those systems.

Mechanical Seal Efficiency Considerations for Pumps in Utilities: Economics of Seals vs. Packing, and Savings With Best Available Seal Flush Arrangements

2008 ◽  
Author(s):  
Richard Smith ◽  
Alan Roddis ◽  
Heinz P. Bloch
Keyword(s):  
Case Studies ◽  
Best Practice ◽  
Energy Savings ◽  
Cooling Water ◽  
Oil Refining ◽  
Feed Water ◽  
Mechanical Seal ◽  
Centrifugal Pumps ◽  
Power Generators ◽  
Water Pumps

Applicable industrial standards for centrifugal pumps endorse several different sealing options as “best practice.” However, the overall acceptance of best practice techniques seems slow and is linked to the fact that sealing devices account for only a small fraction of the energy consumed by pumps. Yet, regardless of perception, significant energy conservation has been achieved by thoughtful sealing practices, as this paper will show. It will highlight case studies that provide guidance on issues of increasing technical and societal concerns relating to fluid emissions. Special attention will be directed to barrier fluid circulation devices used in dual mechanical seal arrangements as described by API-682 (Ref.1), a Standard widely used in the oil refining and petrochemical industries. The applicability of these ciculation devices to the Power Industry will be explained. Comparisons of three of the most widely used conventional integral flow induction/pumping ring devices will be made and the results of extensive testing presented. The paper and presentation also quantifies the value of advanced sealing technologies for pumps and highlights configurational differences between the newer and the more traditional (older) devices. Without exception, international utilities and power producers know that both energy and maintenance expenditures are affected by availability and reliability considerations relating to power generators and their turbine drivers. But feed water pumps and cooling water issues play their part as well. Consequently, a measure of attention has been given to “other big ticket items”, such as cooling tower losses and the like. However, there is compelling evidence that additional, less prominent or less obvious opportunities exist and that these can no longer be overlooked. Pump sealing falls into that category, although sealing devices and seal cooling account for only a small fraction of the energy consumed by pumps. In can be readily shown that significant energy savings have been achieved by thoughtful sealing practices. The general narrative and the implications conveyed by our case studies give visibility to the issues and provide guidance to the user.

Building Energy Audit and Energy-Saving Analysis for a Five-Star Hotel in Beijing

2014 ◽  
Vol 507 ◽  
pp. 521-524
Author(s):  
Chuan Qi Xu ◽  
Song Pan ◽  
Zhen Hui ◽  
Jin Shun Wu ◽  
Yun Mo Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Energy Saving ◽  
Air Conditioning ◽  
Cooling Water ◽  
Building Energy ◽  
Energy Audit ◽  
Energy Monitoring ◽  
Regulatory Frameworks ◽  
Water Pumps ◽  
Energy Equipment

Building energy audit and equipment energy-saving assessment are an important part of the building energy monitoring system in the construction. This paper takes a five-star hotel in Beijing as an example and audits the building energy consumption of the hotel. By testing air conditioning chillers, chilled water pumps, cooling water pumps and other equipments analyses energy-saving potentiality of the conditioning system and lighting equipments. The results would help us put forward some sound energy-saving measures, regulatory frameworks and reduce energy equipment consumption.

Stick-Slip Simulation and Detection in Mechanical Face Seals

2015 ◽  
Author(s):  
Maria Cristina Valigi ◽  
Claudio Braccesi ◽  
Filippo Cianetti ◽  
Silvia Logozzo
Keyword(s):  
Compressive Strength ◽  
Damping Ratio ◽  
Cooling Water ◽  
Design Parameters ◽  
Stick Slip ◽  
Mass Moment ◽  
Face Seals ◽  
Mass Moment Of Inertia ◽  
Water Pumps ◽  
Slip Phenomenon

The present paper proposes a new model and method to detect the occurrence of dynamic instabilities and stick-slip in mechanical face seals used in automotive cooling water pumps, in order to improve their performance. A new tribo-dynamic model is presented and used to examine how many and what design parameters influence stick-slip. Mass, moment of inertia, stiffness, damping ratio, friction relationship, viscosity, roughness and wear, compressive strength of different coupling materials, geometrical specifications and temperature are some of the analyzed parameters. Therefore, this work provides a full overview of the influence of design parameters on the stick-slip phenomenon.

Condition analysis of air conditioning cooling water pumps

2021 ◽  
pp. 475-479
Author(s):  
S. Lampreia ◽  
V. Vairinhos ◽  
V. Lobo ◽  
T. Morgado
Keyword(s):  
Air Conditioning ◽  
Cooling Water ◽  
Water Pumps

Power characteristics of variable frequency speed control-based water pumps in open cooling water systems

2017 ◽  
Vol 39 (3) ◽  
pp. 284-294
Author(s):  
Yiping Song ◽  
Jianing Zhao
Keyword(s):  
Characteristic Equation ◽  
Water System ◽  
Cooling Water ◽  
Water Systems ◽  
Open Loop ◽  
Variable Frequency ◽  
Water Pump ◽  
Pump System ◽  
Power Characteristics ◽  
Water Pumps

The operational power characteristics of variable frequency speed control-based water pumps in an open cooling water system were studied experimentally. It was found through this research that before and after frequency conversion, the ratio of the power of a particular frequency to the power of the rated frequency of the water pump system shows a third-power relationship. A data fitting method was used to obtain the equation for the power and frequency ratio of the system under the overall operating conditions. The experiment shows that the system height difference has no effect on the basic form of the characteristic equation. Finally, when unified consideration is given to the pump, motor and frequency converter, the calculated power of the water pump system is very close to the actual value.This power characteristic equation contributes to calculations relating to the water pump operational speed regulation in an open cooling water system. Practical application: Variable frequency speed-regulating systems for pumps are applied in open loop water systems, such as those supplying cooling towers. However, the standard cube law which is used to determine the power of the water pump system is inappropriate and exaggerates the potential energy-saving. This study determined a new energy model for the water pump system that can more accurately calculate the total power of the variable frequency controlled water pump when used in open loop systems.

Circulating Water Pump Modifications Performed in Conjunction With Cooling Tower Replacement During a 35-Day Outage

2010 ◽  
Author(s):  
Robert M. Morgenstern
Keyword(s):  
Cooling Tower ◽  
Water System ◽  
Cooling Water ◽  
System Capacity ◽  
Unit Load ◽  
Accelerated Corrosion ◽  
Circulating Water ◽  
Design Changes ◽  
Circulating Water System ◽  
Water Pumps

Westar Lawrence Energy Center Unit 5 in Lawrence, Kansas is a 375 mW unit that utilized a closed loop circulating water system with a wooden cooling tower and three horizontal circulating water pumps to provide cooling water to the condenser. The wooden cooling tower experienced rapid degradation over the past five years of operation. Chlorine was added to the water chemistry to reduce attack of the wooden components, but the chlorine levels in the water caused accelerated corrosion of the pump components and base plates. Circulating water system capacity was reduced due to worn pump components and excessive clearances. Unit load was limited by the lack of adequate circulating water capacity. This paper discusses the pump and motor repairs, design changes performed in parallel with demolition of the wooden cooling tower, and replacement with a new fiberglass tower designed to utilize the existing concrete basin. All of the changes were implemented during an outage in April-May 2009.

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