Installation of Hydraulic Ram Pump - Thapathali Campus, Kathmandu
Downloaded from www.binodpandey.wordpress.comA Proposal onInstallation of Hydraulic Ram PumpSubmitted to:Ministry of Science and TechnologySinghadurbar, KathmanduSubmitted by:Industrial Engineering DepartmentThapathali Campus, Kathmandu
Downloaded from www.binodpandey.wordpress.comIntroductionA hydraulic ram (also called hydram) is a pump that uses energy from a falling quantity of waterto pump some of it to an elevation much higher than the original level at the source. No otherenergy is required and as long as there is a continuous flow of falling water, the pump will workcontinuously and automatically.Provision of adequate domestic water supply for scattered rural populations is a major problemin many villages in Nepal. Fuel and maintenance costs to operate conventional pumping systemsare not the long lasting solution. The hydraulic ram pump (hydram) is an alternative pumpingdevice that is relatively simple technology which uses falling water as energy, and is durable.The hydram has only to moving parts and can be easily maintained locally.Recognizing that the hydraulic ram pump (hydram) can be a viable and appropriate renewableenergy water pumping technology in rural areas of the country, our project team decided todesign and manufacture more efficient and durable hydram so that it could be demonstrated in avillage so that other villages will adopt the technology. By adopting this technology settlementsin the river banks can be profited.Fig 1: Components of hydraulic ram installations
Downloaded from www.binodpandey.wordpress.comWorking Principle of Hydram:With reference to fig 1, the momentum provided by the flow (Qs), caused by the low supplyhead (Hs), is used to pump a part of flow (q) to a higher elevation (hd) Qw is the wasted flowwhich may be considered as the “drive flow” and h is the head gained by the suction of thepump.The hydram can be used in places where there is a steady and reliable supply of water with a fallsufficient to operate it. Commercial hydram’s which are mainly manufactured in developedcountries are known for many years. However, commercial hydram’s are expensive and there isa growing trend to develop and design smaller, lighter and low cost model which can befabricated in developing countries.The hydraulic ram pump (hydram) though simple in design with only two moving parts, itsoperation is not well understood. As a result, it has attracted many researchers who have tried toderive analytical models for its operation. Because the researchers have been based in developedcountries, the developing countries did not get access to the information readily and the hydramtechnology is therefore not widely used and the research has not benefited the developingcountries. This project was intended to redress this anomaly. A hamlet in a village setting can besupplied with water using hydram as below. The system includes storage and in some cases mayinclude a treatment (chlorination, filtration, Solar Distillation) plant.Fig 2: Schematic cross section of village water supply with a hydram.As already discussed in previous section hydram is a unique device that uses the energy from astream of water falling from a low head as the driving power to pump part of the water to a headmuch higher than the supply head. With a continuous flow of water, a hydram operatesautomatically and continuously with no other external energy source.We will see operational and constructional features if the Hydram in this section.
Downloaded from www.binodpandey.wordpress.comA hydram is a structurally simple unit consisting of two moving parts: refer fig: the waste valveand delivery (check) valve. The unit also consist an air chamber and an air (snifter) valve. Theoperation of a hydram is intermittent due to the cyclic opening and closing of the waste anddelivery valves. The closure of the waste valve creates a high pressure rise in the drive pipe. Anair chamber is necessary to prevent these high intermittent pumped flows into a continuousstream of flow. The air valve allows air into the hydram to replace the air absorbed by the waterdue to the high pressures and mixing in the air chamber.Project Objectives:The overall objective of the project is to demonstrate a functional hydraulic ram in avillage in Tanahun District by the industrial engineering students so that students can learn themanufacturing and installation of the technology and rural people can help to disseminate thetechnology.Specific objectives are:a) To identify the potential site for hydram installationsb) To design hydram as per site and manufacture the same
Downloaded from www.binodpandey.wordpress.comc) To construct a demonstration/testing facility consisting hydramd) To install the hydrame) To test the performance of hydramMethodology:1. Site visit and Selection2. Site Survey3. Design4. Installation and operation5. Testing and DocumentationCost Calculation:SN Components Amount Remarks1. Hardware set 50,0002. Manufacturing 20,0003. Transportationand Installation20,0004. Testing kit 10,000Total 100,000Total Cost: One Lakh onlyOther costs will be born by the Campus1. Travelling and daily expenditure2. Stationary and other material3. ContingencyConclusion:This project will be studied, conducted and implemented by students of Bachelor of IndustrialEngineering, Thapathali Campus, as a project work supporting their study.