Видео

HRSG, and temperature differences; difference to conventional boilers: - why the temperature differences between hot and cold flow must be (and can be) much lower than in conventional steam boilers - pinch point and it's importance for performance - approach temperature, and superheater temperature difference

Heat Recovery Steam Generators (HRSG) in a combined cycle gas turbine steam power plant (CCGT): introduction and main differences to a conventional steam boiler with a furnace for combustion.

Introduction to combined cycles; thermodynamics and main idea; topping and bottoming cycles

Compression and expansion: calculating the end temperature of gas compression and expansion using polytropic efficiencies; difference of polytropic and isentropic efficiencies.

Introduction to gas turbine calculation: balances, powers and heat rates of the components; calculating gas turbine main performance indicators

Introduction to gas turbines and Brayton process

Back pressure plants are ran according to heat load - amount of power generation depends on the amount of steam coming through turbine to satisfy the heat demand. 3 ways to add at least some flexibility: condensing turbine, auxiliary cooler, or heat storage.

2-stage district heat production in a back pressure district heat cogeneration plant: - general idea, increase power generation - effects: more power, with more fuel - calculation

Determining condenser pressure; how condenser affects the power plant and turbine operation.

Determining steam state from a turbine extraction

How to apply the isentropic expansion efficiency to find the exhaust state of a steam turbine, and with that, determine the turbine thermal power.

Feedwater pre-heating with extraction steam: - general idea - open and closed feed heaters - effect on 1) thermal efficiency, and 2) a plant efficiency caveat

Rankine cycle thermal efficiency, and ways to improve it by varying process parameters. Everything aims basically at one of two basic way of efficiency improvement: - increasing the average temperature of heat input, or - reducing the temperature of heat removal. Modifications of process itself are not considered here.

Introduction to thermodynamic cycles: - basic principles and definition of efficiency - depiction of heat and work as areas in T,s -chart - Carnot and Rankine cycles

Basics of Power Plant Engineering, L1: energy balance

L6 voimalaitoksen kustannukset

L6 jätelämpökattila: lämpötilaerot

L6 Jätelämpökattila

L6 kombivoimalaitokset johdanto

L5 Kaasuturbiinin prosessilaskentaa 2/2: puristus ja paisunta

L5 Kaasuturbiinin prosessilaskentaa 1/2

L5 Brayton ja kaasuturbiini

L4: CHP-tuotanto sulfaattiellutehtaalla

L4: sähköntuotannon joustavuus vastapaineajossa

Luento 4: 2-vaiheinen kaukolämmön tuotanto

Luento 2: lauhdutin ja voimalaitos

Luento 2: Entalpia turbiinin väliotossa

Luento 2: Turbiinin paisuntakäyrä ja teho

Luento 2: Höyryprosessin hyötysuhde ja väliottoesilämmitys