The effects of agitation, liquid-only manure, depth and time on odour emission rates were investigated. Manure storage tanks were filled to incremental depths every two weeks. At each depth odour samples were collected twice. The second sample was collected seven days after the first. Odour concentration was measured with an olfactometer. Three different pig-manure treatments were investigated....

This paper presents a path planning method for partial field coverage. We therefore propose to use a specific path planning pattern. Guiding notion is that lighter machinery with smaller storage tanks can alleviate soil compaction, but does not permit to cover a given field in a single run, for example, during a spraying application. Instead, multiple returns to a mobile or stationary depot loc...

Research on increasing the buckling strength of tanks carrying fluid and also cylindrical shells of thin-walled steel in civil engineering and mechanics is important. This is due to the widespread use of these structures in the industry. Due to the low thickness of the body and also due to the pressure forces entering these tanks, these structures are exposed to lateral buckling. In this resear...

Urban rainwater reuse preserves water resources and promotes sustainable development in rapidly growing urban areas. The efficiency of a large number of urban water reuse systems, operating under different climate and demand conditions, is evaluated here on the base of a new risk analysis approach. Results obtained by probability analysis (PA) indicate that maximum efficiency in low demanding s...

A new optimization framework is applied to management of radioactive wastes stored in belowground tanks at the US Government’s Hanford, WA, nuclear fuels facility. Current remediation plans call for vitrification of the tank contents. Blending of the wastes prior to glass formation reduces the amount of material required for processing, therefore decreasing disposal costs. Uncertainty in the ta...

As a result of the increased penetration intermittent renewable energy sources, Combined Heat and Power (CHP) units are being looked upon as one sources that might provide for ever growing need electrical flexibility. However, CHP often considered must-run on grid their main purpose is generally to cover heat demand an adjoining District Heating Network (DHN). This paper demonstrates how CHP–DH...

Abstract: The control of liquid level in tanks and flow between tanks is a basic problem in the process industries. Almost all theprocesses in the industries are non-linear in nature. Designing a controller for a nonlinear process is an important problem. The problem of level control in interacting tank processes are system dynamics and interacting characteristics. In interacting process, dynam...

Preliminary note The paper presents an analysis of annual variations of temperature and the corresponding saturation pressure of saturated liquid propane in a mounded cylindrical tank used for liquefied petroleum gas (LPG) storage. A mathematical model has been established based on a finite volume method. Boundary and initial conditions have been assumed for the Croatian climate. Simulations ha...

In many Mediterranean countries, users store water resources in private tanks, which are typically located on rooftops. These local reservoirs are generally connected directly to the water distribution network (WDN). This installation scheme causes a disconnection of the WDN from the users, and thus, the users’ water supply is no longer linked to their consumption, which changes the network ope...

Buffer tanks are often designed and implemented for control purposes, yet control theory is rarely used when sizing and designing buffer tanks and their control system. Instead, rules of thumb such as using “10 min residence time” are used. The objective of this paper is to provide a systematic approach. We consider mainly the case where the objective of the buffer tank is to dampen (“average o...