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cols[1].querySelector("a") : null; var item = { name: textOf(nameLink || cols[0]), mappedTo: textOf(fileLink || cols[1]), quantity: cols[2] ? textOf(cols[2]) : "" }; if (item.name) { items.push(item); } } return items; } function fillFromAccordion(accordion) { if (!accordion) { return; } var versucheStep = accordion.querySelector('[data-step="versuche"]'); var versuche = parseItemBlocks(versucheStep, false); setHeadline("print-versuche", stepTitle(versucheStep)); fillTable("print-versuche", versuche, false); var lieferumfangStep = accordion.querySelector('[data-step="lieferumfang"]'); var lieferumfang = parseItemBlocks(lieferumfangStep, true); fillTable("print-lieferumfang", lieferumfang, true); var zubehoer = accordion.querySelector('[data-step="zubehoer"]'); var sections = zubehoer ? zubehoer.querySelectorAll(".card-body") : []; var notwendig = []; var empfohlen = []; for (var i = 0; i < sections.length; i++) { var items = parseItemBlocks(sections[i], false); if (sections[i].querySelector(".text-red, .icon-warning-black")) { notwendig = items; } else if (sections[i].querySelector(".text-green, .icon-Mehrwert_black")) { empfohlen = items; } } fillTable("print-zubehoer-notwendig", notwendig, false); fillTable("print-zubehoer-empfohlen", empfohlen, false); var mediaStep = accordion.querySelector('[data-step="media"]'); var media = parseMedia(mediaStep); setHeadline("print-media", stepTitle(mediaStep)); fillTable("print-media", media, true); } function start() { var itemUrl = resolveItemUrl(); if (!itemUrl) { setTimeout(function () { window.print(); }, 2000); return; } loadAccordion() .then(function (accordion) { fillFromAccordion(accordion); }) .catch(function (err) { if (window.console && console.warn) { console.warn("Accordion konnte nicht geladen werden:", resolveItemUrl(), err); } }) .then(function () { setTimeout(function () { window.print(); }, 500); }); } if (document.readyState === "loading") { document.addEventListener("DOMContentLoaded", start); } else { start(); } })();
 

Technical data


Peltier heat pump

Article no: P2410800
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Principle

As well as the cooling and the heating capacity and efficiency rating of a Peltier heat pump are determined under different operating conditions.

Benefits

  • Open design allows to fully understand function and applications
  • Individual instruments for distinct functions (no "black box")
  • Key products of the experiment setup can also be used for investigating the Seebeck effect

Tasks

  1. To determine the cooling capacity Pc of the pump as a function of the current and to calculate the efficiency rating hc at maximum output.
  2. To determine the heating capacity Pw of the pump and its efficiency rating hw at constant current and constant temperature on the cold side.
  3. To determine Pw, ηw and Pc , ηc from the relationship between temperature and time on the hot and cold sides.
  4. To investigate the temperature behaviour when the pump is used for cooling, with the hot side air-cooled.

Learning objectives

  • Peltier effect
  • Heat pipe
  • Thermoelectric e. m. f.
  • Peltier coefficient
  • Cooling capacity
  • Heating capacity
  • Efficiency rating
  • Thomson coefficient
  • Seebeck coefficient
  • Thomson equations
  • Heat conduction
  • Convection
  • Forced cooling
  • Joule effect




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