{"id":987,"date":"2020-07-03T08:38:50","date_gmt":"2020-07-03T08:38:50","guid":{"rendered":"https:\/\/www.zillionsbuyer.com\/blog\/?p=987"},"modified":"2020-07-03T09:39:28","modified_gmt":"2020-07-03T09:39:28","slug":"what-is-start-stop-control-of-flows-in-pumps","status":"publish","type":"post","link":"https:\/\/www.zillionsbuyer.com\/blog\/what-is-start-stop-control-of-flows-in-pumps\/","title":{"rendered":"What is start\/stop control of flows in pumps"},"content":{"rendered":"\n

In this control method, the flow is controlled by switching pumps<\/a> on or off. It is necessary to have a storage capacity in the system e.g. a wet well, an elevated tank or an accumulator type pressure vessel:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The\nstorage can provide a steady flow to the system with an intermittent operating\npump.<\/p>\n\n\n\n

When\nthe pump runs, it does so at the chosen (presumably optimum) duty point and\nwhen it is off, there is no energy consumption.<\/p>\n\n\n\n

If\nintermittent flow, stop\/start operation and the storage facility are\nacceptable, this is an effective approach to minimize energy consumption.<\/p>\n\n\n\n

The stop\/start operation<\/strong> causes additional loads on the power transmission components and increased heating in the motor. The frequency of the stop\/start cycle should be within the motor design criteria and checked with the pump manufacturer.<\/p>\n\n\n\n

It\nmay also be used to benefit from “off peak” energy tariffs by\narranging the run times during the low tariff periods.<\/p>\n\n\n\n

Minimize energy consumption with stop\/start control it is better to pump at as low flow rate a the process permits<\/p>\n\n\n\n

This\nminimizes friction losses in the pipe and an appropriately small pump can be\ninstalled.<\/p>\n\n\n\n

For\nexample, pumping at half the flow rate twice as long can reduce energy\nconsumption to a quarter<\/p>\n","protected":false},"excerpt":{"rendered":"

In this control method, the flow is controlled by switching pumps on or off. It is necessary to have a storage capacity in the system e.g. a wet well, an elevated tank or an accumulator type pressure vessel: The storage can provide a steady flow to the system with an intermittent operating pump. When the […]<\/p>\n","protected":false},"author":1,"featured_media":988,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[306],"class_list":["post-987","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-engineering","tag-pump"],"_links":{"self":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/987","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/comments?post=987"}],"version-history":[{"count":2,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/987\/revisions"}],"predecessor-version":[{"id":990,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/posts\/987\/revisions\/990"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/media\/988"}],"wp:attachment":[{"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/media?parent=987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/categories?post=987"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zillionsbuyer.com\/blog\/wp-json\/wp\/v2\/tags?post=987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}