Essays about: "Minimum environmental load"

Showing result 1 - 5 of 6 essays containing the words Minimum environmental load.

  1. 1. RC Trough Bridges: A Parametric Study using FEM and an Analysis of their Current State

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : David Åkergren; [2021]
    Keywords : concrete; trough bridges; parametric study; FEM; BaTMan; ATENA; load eccentricity; compressive strength; tensile strength;

    Abstract : There are approximately 4000 railway bridges in Sweden managed by the Swedish Administration of Transport (Trafikverket), of which a common construction type is the reinforced concrete (RC) trough bridge, which is a structure that consists of a slab carried by two longitudinal main beams which transfer loads towards the supports. A substantial amount of the RC trough bridge population is approaching the end of their service lives which consequently implies that the replacement of some of these bridges can be expected in the near future. READ MORE

  2. 2. Throughflow Study on Bleeding for Part Load Compressor Operation

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Simon Hedkvist; [2019]
    Keywords : Compressor; Minimum environmental load; Aerodynamic; Throughflow; Stability; Bleeding;

    Abstract : The transition of the European energy grid to renewable energy sources is increasing the demand for back-up capacity with high flexibility. Current fossil fuel plants are continuously being forced into part load operation, where they are limited by pollution regulations that dictate their minimum environmental load, MEL. READ MORE

  3. 3. Towards Flexible Power Generation Short-term Optimization of a Combined Cycle Power Plant Integrated with an Inlet Air Conditioning Unit

    University essay from KTH/Energiteknik

    Author : Weimar Mantilla Gutierrez; [2019]
    Keywords : Combined cycle gas turbine; Power augmentation; Flexibility; Inlet air conditioning; Thermal energy storage; Heat pump; Mixed-integer linear programming MILP; kombikraftverk; kraftförbättring; flexibilitet; inluftsbehandling; termisk energilagring; värmepump; linjär programmering; MILP;

    Abstract : Combined cycle gas turbine power plants (CCGT), as part of the electricity generation fleet, are required to improve their flexibility to help balance the power system under new scenarios with high shares of variable renewable sources. Among the different possibilities to enhance the power plant performance, an inlet air conditioning unit offers the benefit of power augmentation and “minimum environmental load” reduction by controlling the gas turbine intake temperature using cold thermal energy storage and a heat pump. READ MORE

  4. 4. Hybrid PV-Biomass Power Plant design for an Indonesian village

    University essay from KTH/Energiteknik

    Author : Chloé Prévost; [2018]
    Keywords : ;

    Abstract : This thesis work focuses on the design of a hybrid PV-Gasification-Battery plant for a remote villagelocated on an Indonesian island and currently not electrified. As the objective of the study is to assess therelevance of the hybrid plant to make use of the local resources to satisfy the demand, the village situationis analyzed, and a representative load curve is built. READ MORE

  5. 5. Evaluation of sustainability criteria for small-scale wastewater treatment facilities

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Edvard Nordenskjöld; [2017]
    Keywords : On-site sewage facilities; phosphorus; micropollutants; multi-criteria analysis; precipitation; adsorption; full-scale; wastewater treatment; Enskilda avlopp; fosfor; mikroföroreningar; multi-kriterie analys; utfällning; adsorption; fullskala; avloppsrening;

    Abstract : There are about 700,000 on-site sewage facilities (OSSFs) in Sweden, almost a quarter of which amount only to septic tanks for sludge collection and removal, with no form of post-treatment. All these OSSFs contribute about 10 % of the total anthropogenic phosphorus (P) load from Swedish coasts to the Baltic Sea. READ MORE